
Direct detection of primordial black hole dark matter. (arXiv:1906.06348v1 [hepph])
Authors: Benjamin V. Lehmann, Christian Johnson, Stefano Profumo, Thomas Schwemberger
If dark matter is composed of primordial black holes, such black holes can
span an enormous range of masses. A variety of observational constraints exist
on massive black holes, and black holes with masses below $10^{15}\,\mathrm{g}$
are often assumed to have completely evaporated by the present day. But if the
evaporation process halts at the Planck scale, it would leave behind a stable
relic, and such objects could constitute the entirety of dark matter. Neutral
Planckscale relics are effectively invisible to both astrophysical and direct
detection searches. However, we argue that such relics may typically carry
electric charge, making them visible to terrestrial detectors. We evaluate
constraints and detection prospects in detail, and show that if not already
ruled out by monopole searches, this scenario can be largely explored within
the next decade using existing or planned experimental equipment. A single
detection would have enormous implications for cosmology, black hole physics,
and quantum gravity.

Oscillons and Dark Matter. (arXiv:1906.06352v1 [hepph])
Authors: Jan Olle, Oriol Pujolas, Fabrizio Rompineve
Oscillons are bound states sustained by selfinteractions that appear in
rather generic scalar models. They can be extremely longlived and in the
context of cosmology they have a builtin formation mechanism  parametric
resonance instability. These features suggest that oscillons can affect the
standard picture of scalar ultralight dark matter (ULDM) models. We explore
this idea along two directions. First, we investigate numerically oscillon
lifetimes and their dependence on the shape of the potential. We find that
scalar potentials that occur in well motivated axionlike models can lead to
oscillons that live up to $10^8$ cycles or more. Second, we discuss the
observational constraints on the ULDM models once the presence of oscillons is
taken into account. For a wide range of axion masses, oscillons decay around or
after matterradiation equality and can thus act as early seeds for structure
formation. We also discuss the possibility that oscillons survive up to today.
In this case they can most easily play the role of dark matter.

Model Independent analysis of MeV scale dark matter: II. Implications from $e^e^+$ colliders and Direct Detection. (arXiv:1906.06364v1 [hepph])
Authors: Debajyoti Choudhury, Divya Sachdeva
Dark matter particles with masses in the subGeV range have escaped severe
constraints from direct detection experiments such as LUX, PANDAXII and
XENON100 as the corresponding recoil energies are, largely, lower than the
detector thresholds. In a companion paper, we demonstrated, in a model
independent approach, that a significantly large fraction of the parameter
space escapes the cosmological and astrophysical constraints. We show here,
though, that the remaining parameter space lends itself to the possibility of
discovery at both direct detection experiments (such as CRESSTII) as well as
in a lowenergy collider such as BelleII.

Interpretable deep learning for nuclear deformation in heavy ion collisions. (arXiv:1906.06429v1 [nuclth])
Authors: LongGang Pang, Kai Zhou, XinNian Wang
The structure of heavy nuclei is difficult to disentangle in highenergy
heavyion collisions. The deep convolution neural network (DCNN) might be
helpful in mapping the complex final states of heavyion collisions to the
nuclear structure in the initial state. Using DCNN for supervised regression,
we successfully extracted the magnitude of the nuclear deformation from
eventbyevent correlation between the momentum anisotropy or elliptic flow
($v_2$) and total number of charged hadrons ($dN_{\rm ch}/d\eta$) within a
Monte Carlo model. Furthermore, a degeneracy is found in the correlation
between collisions of prolateprolate and oblateoblate nuclei. Using the
Regression Attention Mask algorithm which is designed to interpret what has
been learned by DCNN, we discovered that the correlation in totaloverlapped
collisions is sensitive to only large nuclear deformation, while the
correlation in semioverlapped collisions is discriminative for all magnitudes
of nuclear deformation. The method developed in this study can pave a way for
exploration of other aspects of nuclear structure in heavyion collisions.

Constraining the $331$ model with heavy neutral leptons using $(g2)_{\mu}$ and dark matter observables. (arXiv:1906.06444v1 [hepph])
Authors: C. E. AlvarezSalazar, O. L. G. Peres
We find constraints on the highest scale of symmetry breaking of a model with
gauge symmetry $SU(3)_C \otimes SU(3)_L \otimes U(1)_X$ with heavy neutral
leptons in the fermion triplets, calculating the anomalous magnetic moment of
the muon and using results of the relic abundance of dark matter and
experiments searching for its direct detection.
In order to do this, we have calculated the oneloop contribution of new
particles in the model to $(g2)_{\mu}$, finding a favoured region for the
scale at which $SU(3)_L$ is broken, and we have found lower bounds for this
scale making a comparison of the predictions for the detection of a fermion
dark matter candidate in the model in terms of simplified dark matter models,
identifying the dominant portal for its interactions with standard model
particles, and using constraints for the relic abundance and spinindependent
scattering cross section of the fermion candidate with protons.

Small $x$ phenomenology on gluon evolution through BFKL equation in light of a constraint in multiRegge kinematics. (arXiv:1906.06468v1 [hepph])
Authors: P. Phukan, M. Lalune, J. K. Sarma
We investigate the impact of so called kinematic constraint on gluon
evolution at small $x$. Implanting the constraint on the real emission term of
gluon ladder diagram, we obtain an integrodifferential form of BFKL equation.
Later we solve the equation analytically using the method of characteristics.
We sketch the Bjorken x and transverse momentum $k_t^2$ dependence of our
solution of unintegrated gluon distributions $f(x,k_t^2)$ in kinematic
constraint supplemented BFKL equation and contrasted the same with original
BFKL equation. Then we extract the collinear gluon density $xg(x,Q^2)$ from
unintegrated gluon distributions $f(x,k_t^2)$ and compared our theoretical
prediction with that of global data fits viz. NNPDF3.1sx and CT14. Finally we
assess the sensitivity of $f(x,k_t^2)$ towards BFKL intercept $\lambda$ for
three canonical choices of $\lambda$ viz. o.4, 0.5 and 0.6.

Contributions of Jets in Net Charge Fluctuations from the Beam Energy Scan at RHIC and LHC. (arXiv:1906.06482v1 [hepph])
Authors: Bushra Ali, Shaista Khan, Shakeel Ahmad
Dynamical net charge fluctuations have been studied in ultrarelativistic
heavyion collisions from the beam energy scan at RHIC and LHC energies by
carrying out the hadronic model simulation. Monte Carlo model, HIJING is used
to generate events in two different modes, HIJINGdefault with jet quenching
switched off and jet/minijet production switched off. A popular variable,
$\nu_{[+,dyn]}$ is used to study the net charge fluctuations in different
centrality bins and the findings are compared with the available experimental
values reported earlier. Although the broad features of net charge fluctuations
are reproduced by the HIJING, yet the model predicts the larger magnitude of
fluctuations as compared to the one observed in experiments. The role of
jets/minijets production in reducing the net charge fluctuations is, however
distinctly visible from the analysis of the two types of HIJING events.
Furthermore, $dN_{ch}/d\eta$ and $1/N$ scaling is partially exhibited which is
due to the fact that in HIJING, nucleusnucleus collisions are treated as
multiple independent nucleonnucleon collisions.

$R$symmetric NMSSM from Unification. (arXiv:1906.06486v1 [hepph])
Authors: Sibo Zheng
We study the NMSSM with the knowledge about unification. While this model is
a simple and effective extension to avoid the dilemmas the MSSM confronts in
the infrared energy region, it is challenging to seclude the singlet $N$ in the
renormalization group trajectory from unification scale to weak scale. We
propose for the first time identifying the singlet as the goldstino
supermultiplet of supersymmetry breaking. Following this proposal, we derive
the constraints from naturalness, show simple examples of general O'
Raifeartaigh models, and discuss distinctive features in the Rsymmetric NMSSM
with $N$ as the goldstino supermultiplet.

Heavy hadron molecules in effective field theory: the emergence of exotic nuclear landscapes. (arXiv:1906.06491v1 [hepph])
Authors: Manuel Pavon Valderrama
Heavy hadron molecules were first theorized from a crude analogy with the
deuteron and the nuclear forces binding it, a conjecture which was proven to be
on the right track after the discovery of the $X(3872)$. However, this analogy
with nuclear physics has not been seriously exploited beyond a few calculations
in the two and threebody sectors, leaving a great number of possible
theoretical consequences unexplored. Here we show that nuclear and heavy hadron
effective field theories are formally identical: using a suitable notation,
there is no formal difference between these two effective field theories. For
this, instead of using the standard heavy superfield notation, we have written
the heavy hadron interactions directly in terms of the light quark degrees of
freedom. We give a few examples of how to exploit this analogy, e.g. the
calculation of the twopion exchange diagrams. Yet the most relevant
application of the present idea is the conjecture of exotic nuclear landscapes,
i.e. the possibility of few heavy hadron bound states with characteristics
similar to those of the standard nuclei.

Topquark pair production at the LHC: Fully differential QCD predictions at NNLO. (arXiv:1906.06535v1 [hepph])
Authors: Stefano Catani, Simone Devoto, Massimiliano Grazzini, Stefan Kallweit, Javier Mazzitelli
We report on a new fully differential calculation of the
nexttonexttoleadingorder (NNLO) QCD radiative corrections to the
production of topquark pairs at hadron colliders. The calculation is performed
by using the $q_T$ subtraction formalism to handle and cancel infrared
singularities in real and virtual contributions. The computation is implemented
in the Matrix framework, thereby allowing us to efficiently compute arbitrary
infraredsafe observables for stable top quarks. We present NNLO predictions
for several single and doubledifferential kinematical distributions in $pp$
collisions at the centreofmass energy $\sqrt{s}=13$ TeV, and we compare them
with recent LHC data by the CMS collaboration.

A machine learning study to identify spinodal clumping in high energy nuclear collisions. (arXiv:1906.06562v1 [nuclth])
Authors: Jan Steinheimer, LongGang Pang, Kai Zhou, Volker Koch, Jørgen Randrup, Horst Stoecker
The coordinate and momentum space configurations of the net baryon number in
heavy ion collisions that undergo spinodal decomposition, due to a firstorder
phase transition, are investigated using stateoftheart machinelearning
methods. Coordinate space clumping, which appears in the spinodal
decomposition, leaves strong characteristic imprints on the spatial net density
distribution in nearly every event. On the other hand, the corresponding
momentum distributions do not show clear eventbyevent features. However, a
small subset of events can be systematically differentiated even if only the
momentum space information is available. In such scenarios, observables like
the baryon number cumulants signal a spinodal nonequilibrium phase transition.
Indeed the thirdorder cumulant, the skewness, does exhibit a peak at the beam
energy ($\mathrm{E}_{\mathrm{lab}}= 34$ A GeV), where the transient hot and
dense system created in the heavy ion collision reaches the firstorder phase
transition.

Improved description of the HERA data with a new simple PDF parametrization. (arXiv:1906.06573v1 [hepph])
Authors: Francesco Giuli
A new parametrization for the parton distribution functions with a higher
flexibility in the small$x$ region is presented. It has been implemented in
the xFitter opensource PDF fitting tool, and compared to the default xFitter
parametrization, used for the determination of the HERAPDF set. It has been
found that the combined inclusive HERA I+II data can be described using NNLO
theory with a significantly higher quality than HERAPDF2.0: the $\chi^2$ is
reduced by more than 60 units, having used only four more parameters. Our
result highlights a significant parametrization bias in the default xFitter
parametrization at small $x$, which would lead to even more dramatic effects
when used for higher energy colliders, where the small$x$ region is more
relevant. We also find that the inclusion of small$x$ resummation leads to a
further reduction by approximately 30 extra units in $\chi^2$. In this
contribution, we review the results of the recent paper "A new simple PDF
parametrization: improved description of the HERA data" (arXiv:1902.11125).

Detecting new signals under background mismodelling. (arXiv:1906.06615v1 [physics.dataan])
Authors: Sara Algeri
Searches for new astrophysical phenomena often involve several sources of
nonrandom uncertainties which can lead to highly misleading results. Among
these, modeluncertainty arising from background mismodelling can dramatically
compromise the sensitivity of the experiment under study. Specifically,
overestimating the background distribution in the signal region increases the
chances of missing new physics. Conversely, underestimating the background
outside the signal region leads to an artificially enhanced sensitivity and a
higher likelihood of claiming false discoveries. The aim of this work is to
provide a unified statistical strategy to perform modelling, estimation,
inference, and signal characterization under background mismodelling. The
method proposed allows to incorporate the (partial) scientific knowledge
available on the background distribution and provides a dataupdated version of
it in a purely nonparametric fashion without requiring the specification of
prior distributions. Applications in the context of dark matter searches and
radio surveys show how the tools presented in this article can be used to
incorporate nonstochastic uncertainty due to instrumental noise and to
overcome violations of classical distributional assumptions in stacking
experiments.

The decays $\tau\rightarrow (K, K(1460))\nu_{\tau}$ and the value of the weak decay coefficients ${F}_{K}$ and ${{F}_{{K}^{'}}}$ in the extended NJL model. (arXiv:1906.06680v1 [hepph])
Authors: M. K. Volkov, K. Nurlan, A . A. Pivovarov
In the extended NJL model, the decay widths of $\tau\rightarrow (K,
K(1460))\nu_{\tau}$, $(K, K(1460))\rightarrow {\mu}\nu_{\mu}$ are calculated.
The contributions from intermediate axialvector mesons ${K}_{1}(1270)$,
${K}_{1}(1400)$ and the first radially excited state ${K}_{1}(1650)$ are taken
into account. Estimates for the weak decay coefficients ${F}_{K}$ and
${{F}_{{K}^{'}}}$ are given. Predictions are made for the width of
$\tau\rightarrow K(1460)\nu_{\tau}$ decay and ${{F}_{{K}^{'}}}$ constant.

Dynamically Generated Inflation from NonRiemannian Volume Forms. (arXiv:1906.06691v1 [grqc])
Authors: David Benisty, Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
We propose a simple modified gravity model {\em without} any initial matter
fields in terms of several alternative nonRie\mann\ian spacetime volume
elements within the metric (second order) formalism. We show how the
nonRie\mann\ian volumeelements, when passing to the physical Einstein
frame, create a canonical scalar field and produce dynamically a nontrivial
inflationarytype potential for the latter with a large flat region and a
stable lowlying minimum. We study the evolution of the cosmological solutions
from the point of view of theory of dynamical systems. The theory predicts the
spectral index $n_s \approx 0.96$ and the tensortoscalar ratio $r \approx
0.002$ for 60 $e$folds, which is in accordance with the observational data. In
the future Euclid and SPHEREx missions or the BICEP3 experiment are expected to
provide experimental evidence to test those predictions.

Sudakov suppression of the BalitskyKovchegov kernel. (arXiv:1906.06825v1 [hepph])
Authors: Duxin Zheng, Jian Zhou
To sum high energy leading logarithms in a consistent way, one has to impose
the strong ordering in both projectile rapidity and dense target rapidity
simultaneously, which results in a kinematically improved
BalitskyKovchegov(BK) equation. We find that beyond this strong ordering
region, the important subleading double logarithms arise at high order due to
the incomplete cancellation between real corrections and virtual corrections in
a tchannel calculation. Based on this observation, we further argue that these
double logarithms are the Sudakov type ones, and thus can be resummed into an
exponential leading to a Sudakov suppressed BK equation.

Presupernova neutrino signals as potential probes of neutrino mass hierarchy. (arXiv:1906.06839v1 [astroph.HE])
Authors: Gang Guo, YongZhong Qian, Alexander Heger
We assess the potential of using presupernova neutrino signals at the
Jiangmen Underground Neutrino Observatory (JUNO) to probe the yetunknown
neutrino mass hierarchy. Using models for stars of 12, 15, 20, and 25 solar
masses, we find that if the electron antineutrino signals from such a star can
be predicted precisely and the star is within ~440880 pc, the number of events
of electron antineutrino captures on protons detected within one day of its
explosion allows to determine the hierarchy at the > ~95% confidence level. For
determination at this level using such signals from Betelgeuse, which is at a
distance of ~222 pc, the uncertainty in the predicted number of signals needs
to be < ~1430%. In view of more realistic uncertainties, we discuss and
advocate a modelindependent determination using both electron neutrino and
antineutrino signals from Betelgeuse. This method is feasible if the cosmogenic
background for neutrinoelectron scattering events can be reduced by a factor
of ~2.510 from the current estimate. Such reduction might be achieved by using
coincidence of the background events, the exploration of which for JUNO is
highly desirable.

The cos$\phi_R$ asymmetry of dihadron production in double longitudinally polarized SIDIS. (arXiv:1906.06845v1 [hepph])
Authors: Wei Yang, Hui Li, Zhun Lu
We present a study on the double longitudinalspin asymmetry of dihadron
production in semiinclusive deep inelastic scattering, in which the transverse
momentum of the finalstate hadron pairs is integrated out.In particular, we
investigate the origin of the $\cos\phi_R$ azimuthal asymmetry for which we
take into account the coupling of the helicity distribution $g_1$ and the
twist3 dihadron fragmentation function $\widetilde{D}^{\sphericalangle}$. We
calculate the $s$wave and $p$wave interference term
$\widetilde{D}^{\sphericalangle}_{ot}$ in a spectator model. We estimate the
$\cos\phi_R$ asymmetry at the kinematics of COMPASS which is collecting data on
dihadron prouduction in polarized deep inelastic scattering. The prediction of
the same asymmetry at JLab 12GeV and a future EIC are also presented. Our study
indicates that measuring the $\cos\phi_R$ asymmetry in SIDIS may be a ideal way
to probe the dihadron fragmentation function $\widetilde{D}^{\sphericalangle}$.

The Role of Future Lepton Colliders for Fermionic Zportal Dark Matter. (arXiv:1906.06864v1 [hepph])
Authors: Dilip Kumar Ghosh, Taisuke Katayose, Shigeki Matsumoto, Ipsita Saha, Satoshi Shirai, Tomohiko Tanabe
The fermionic Zportal dark matter model suffers from severe constraints from
direct detection experiments. However, a narrow parameter space around the
Zfunnel region is beyond the reach due to the resonance annihilation. In this
paper, we provide an intriguing collider prospect for probing the Zfunnel dark
matter mass range at the future lepton colliders including the beam
polarization feature. We have done a comprehensive analysis for monophoton
signal at the colliders for such a dark matter. A realistic estimation for the
90% C.L. constraints with the systematic beam uncertainties has also been
provided.

Inflation, Proton Decay, and HiggsPortal Dark Matter in $SO(10) \times U(1)_\psi$. (arXiv:1906.06869v1 [hepph])
Authors: Nobuchika Okada, Digesh Raut, Qaisar Shafi
We propose a simple nonsupersymmetric grand unified theory (GUT) based on
the gauge group $SO(10) \times U(1)_\psi$. The model includes 3 generations of
fermions in ${\bf 16}$ ($+1$), ${\bf 10}$ ($2$) and ${\bf 1}$ ($+4$)
representations. The ${\bf 16}$plets contain Standard Model (SM) fermions plus
righthanded neutrinos, and the ${\bf 10}$plet and the singlet fermions are
introduced to make the model anomalyfree. Gauge coupling unification at
$M_{GUT} \simeq 5 \times 10^{15}10^{16}$ GeV is achieved by including an
intermediate PatiSalam breaking at $M_{I} \simeq 10^{12}10^{11}$ GeV, which
is a natural scale for the seesaw mechanism. For $M_{I} \simeq
10^{12}10^{11}$, proton decay will be tested by the HyperKamiokande
experiment. The extra fermions acquire their masses from $U(1)_\psi$ symmetry
breaking, and a $U(1)_\psi$ Higgs field drives a successful inflectionpoint
inflation with a low Hubble parameter during inflation, $H_{inf} \ll M_{I}$.
Hence, cosmologically dangerous monopoles produced from $SO(10)$ and PS
breakings are diluted away. The reheating temperature after inflation can be
high enough for successful leptogenesis. With the Higgs field contents of our
model, a ${\bf Z}_2$ symmetry remains unbroken after GUT symmetry breaking, and
the lightest mass eigenstate among linear combinations of the ${\bf 10}$plet
and the singlet fermions serves as a Higgsportal dark matter (DM). We identify
the parameter regions to reproduce the observed DM relic density while
satisfying the current constraint from the direct DM detection experiments. The
present allowed region will be fully covered by the future direct detection
experiments such as LUXZEPLIN DM experiment. In the presence of the extra
fermions, the SM Higgs potential is stabilized up to $M_{I}$.

Study of Lepton Universality at Belle. (arXiv:1906.06871v1 [hepex])
Authors: Markus Tobias Prim
The Belle Collaboration presented three recent Belle analyses: The search for
$B\rightarrow l\nu\gamma$ ($l = e, \mu$) with improved hadronic tagging, the
search for $B\rightarrow \mu \nu_\mu$ with inclusive tagging and the test of
lepton universality in $B\rightarrow K^*ll$ ($l = e, \mu$) decays.

Lorentz Invariance Violation effects on UHECR propagation: a geometrized approach. (arXiv:1906.06948v1 [hepph])
Authors: M.D.C. Torri, S. Bertini, M. Giammarchi, L. Miramonti
We explore the possibility to geometrize the interaction of massive fermions
with the quantum structure of spacetime, trying to create a theoretical
background, in order to explain what some recent experimental results seem to
implicate on the propagation of Ultra High Energy Cosmic Rays (UHECR). We will
investigate part of the phenomenological implications of this approach on the
predicted effect of the UHECR suppression, in fact recent evidences seem to
involve the modification of the GZK cutoff phenomenon. The search for an
effective theory, which can explain this physical effect, is based on Lorentz
Invariance Violation (LIV), which is introduced via Modified Dispersion
Relations (MDRs). Furthermore we illustrate that this perspective implies a
more general geometry of spacetime than the usual Riemannian one, indicating,
for example, the opportunity to resort to Finsler theory.

The Higgs width in the SMEFT. (arXiv:1906.06949v1 [hepph])
Authors: Ilaria Brivio, Tyler Corbett, Michael Trott
We calculate the total and partial inclusive Higgs widths at leading order in
the Standard Model Effective Field Theory (SMEFT). We report results
incorporating SMEFT corrections for two and four body Higgs decays through
vector currents in this limit. The narrow width approximation is avoided and
all phase space integrals are directly evaluated. We explain why the narrow
width approximation fails more significantly in the SMEFT compared to the SM,
despite the narrowness of the observed $\rm SU(2) \times U(1)$ bosons in both
theories. Our results are presented in a manner that allows various input
parameter schemes to be used, and they allow the inclusive branching ratios and
decay widths of the Higgs to be numerically determined without a Monte Carlo
generation of phase space for each Wilson coefficient value chosen.

Double Dmeson production in protonproton and protonlead collisions at the LHC. (arXiv:1906.06971v1 [hepph])
Authors: Ilkka Helenius, Hannu Paukkunen
We consider the simultaneous production of two heavyflavoured hadrons 
particularly D mesons  at the LHC. We base our calculations on collinearly
factorized QCD at nexttoleading order, using the contemporary parton
distribution functions and Dmeson fragmentation functions. The contributions
of doubleparton scatterings are included in the approximation of independent
partonic interactions. Our framework benchmarks well with the available
protonproton data from the LHCb collaboration giving us confidence to make
predictions for protonlead collisions. Our results indicate that the double
Dmeson production in protonlead collisions should be measurable at the LHCb
kinematics with the already collected RunII data, and should provide evidence
for doubleparton scattering at perturbative scales with a nuclear target.

Resonant Decay of Gravitational Waves into Dark Energy. (arXiv:1906.07015v1 [grqc])
Authors: Paolo Creminelli, Giovanni Tambalo, Filippo Vernizzi, Vicharit Yingcharoenrat
We study the decay of gravitational waves into dark energy fluctuations
$\pi$, taking into account the large occupation numbers. We describe dark
energy using the effective field theory approach, in the context of generalized
scalartensor theories. When the $ m_3^3 \delta K\delta g^{00}$ (cubic
Horndeski) and $\tilde m_4^2$ (beyond Horndeski) operators are present, the
gravitational wave acts as a classical background for $\pi$ and modifies its
dynamics. In particular, $\pi$ fluctuations are described by a Mathieu equation
and feature instability bands that grow exponentially. Focusing on the regime
of small gravitationalwave amplitude, corresponding to narrow resonance, we
calculate analytically the produced $\pi$, its energy and the change of the
gravitationalwave signal. The resonance is affected by $\pi$ selfinteractions
in a way that we cannot describe analytically. This effect is very relevant for
the operator $m_3^3$ and it probably kills the instability. In the case of the
$\tilde m_4^2$ operator selfinteractions can be neglected, at least in some
regimes. The modification of the gravitationalwave signal is observable for
$10^{20} \lesssim \alpha_{\rm H} \lesssim 10^{17}$ with a LIGO/Virgolike
interferometer and for $10^{16} \lesssim \alpha_{\rm H} \lesssim 10^{10}$
with a LISAlike one. These values are well below the bound from the
perturbative decay of the graviton, $\alpha_{\rm H} \lesssim 10^{10}$.

Azimuthal asymmetries in unpolarized SIDIS and DrellYan processes: a case study towards TMD factorization at subleading twist. (arXiv:1906.07037v1 [hepph])
Authors: Alessandro Bacchetta, Giuseppe Bozzi, Miguel G. Echevarria, Cristian Pisano, Alexey Prokudin, Marco Radici
We consider the azimuthal distribution of the final observed hadron in
semiinclusive deepinelastic scattering and the lepton pair in the DrellYan
process. In particular, we focus on the $\cos \phi$ modulation of the
unpolarized cross section and on its dependence upon transverse momentum. At
low transverse momentum, for these observables we propose a factorized
expression based on treelevel approach and conjecture that the same formula is
valid in transversemomentum dependent (TMD) factorization when written in
terms of subtracted TMD parton distributions. Our formula correctly matches
with the collinear factorization results at high transverse momentum, solves a
longstanding problem and is a necessary step towards the extension of the TMD
factorization theorems up to the subleading twist.

Weak production of strange $\Xi$ baryons off the nucleon. (arXiv:1906.07049v1 [hepph])
Authors: M. Rafi Alam, I. Ruiz Simo
The charged current Cabibbosupressed associated $K \Xi$ production off the
nucleon induced by antineutrinos is studied at low and intermediate energies.
The nonresonant terms are obtained using a microscopical model based on the
SU(3) chiral Lagrangian. The basic parameters of the model are $f_\pi$, the
pion decay constant, Cabibbo's angle, the proton and neutron magnetic moments
and the axial vector coupling constants for the baryons octet, D and F, that
are obtained from the analysis of the semileptonic decays of neutron and
hyperons. In addition, we also consider $\Sigma^\ast(1385)$ resonance, which
can decay in $K \Xi$ final state when this channel is open. The studied
mechanism is the prime source of $\Xi$ production at antineutrino energies
around $2$ GeV and the calculated cross sections at these energies can be
measured at the current and future neutrino experiments.

Probing New Physics with $\bar B \to \rho(770) \, \ell^ \bar \nu_\ell$ and $\bar B \to a_1(1260) \, \ell^ \bar \nu_\ell$. (arXiv:1906.07068v1 [hepph])
Authors: P. Colangelo, F. De Fazio, F. Loparco
The $B$ meson semileptonic modes to $\rho(770)$ and $a_1 (1260)$ are useful
to pin down possible non Standard Model effects. The 4d differential $\bar B
\to \rho(\pi \pi) \ell^ \bar \nu_\ell$ and $ \bar B \to a_1 (\rho \pi) \ell^
\bar \nu_\ell$ decay distributions are computed in SM and in extensions
involving new Lepton Flavour Universality violating semileptonic $b \to u$
operators. The Large Energy limit for the light meson is also considered for
both modes. The new effective couplings are constrained using the available
data, and several observables in $\bar B \to \rho(\pi\pi) \ell^ \bar \nu_\ell$
in which NP effects can be better identified are selected, using the angular
coefficient functions. The complementary role of $\bar B \to \rho(\pi \pi)
\ell^ \bar \nu_\ell$ and $\bar B \to a_1 (\rho \pi) \ell^ \bar \nu_\ell$ is
discussed.

AMS02 antiprotons are consistent with a secondary astrophysical origin. (arXiv:1906.07119v1 [astroph.HE])
Authors: Mathieu Boudaud, Yoann Génolini, Laurent Derome, Julien Lavalle, David Maurin, Pierre Salati, Pasquale D. Serpico
The AMS02 experiment has ushered cosmicray physics into precision era. In a
companion paper, we designed an improved method to calibrate propagation models
on B/C data. Here we provide a robust prediction of the $\bar{p}$ flux,
accounting for several sources of uncertainties and their correlations.
Combined with a correlation matrix for the $\bar{p}$ data, we show that the
latter are consistent with a secondary origin. This Letter presents key
elements relevant to dark matter search in this channel, notably by pointing
out the inherent difficulties in achieving predictions at the percentlevel
precision.

NonGaussian Formation of Primordial Black Holes: Effects on the Threshold. (arXiv:1906.07135v1 [astroph.CO])
Authors: Alex Kehagias, Ilia Musco, Antonio Riotto
Primordial black holes could have been formed in the early universe from
sufficiently large cosmological perturbations reentering the horizon when the
Universe is still radiation dominated. These originate from the spectrum of
curvature perturbations generated during inflation at smallscales. Because of
the nonlinear relation between the curvature perturbation $\zeta$ and the
overdensity $\delta\rho$, the formation of the primordial black holes is
affected by intrinsic nonGaussianity even though the curvature perturbation is
Gaussian. We investigate the impact of this nonGaussianity on the critical
threshold $\delta_c$ which measures the excess of mass of the perturbation,
finding a relative change with respect to the value obtained using a linear
relation between $\zeta$ and $\delta\rho$, of a few percent. This shows that
the value of the critical threshold is rather robust against nonlinearities.
This allows a computation of the abundance of primordial black holes which is
more precise than using the critical amplitude of the peak, since the latter is
more sensitive to the local feature of the shape of the perturbation. The same
holds also when cosmologically interesting values of local primordial
nonGaussianity are added to the curvature perturbation.

Reggeized model for $\gamma p \to \rho^ \Delta^{++}(1232)$ photoproduction. (arXiv:1612.02071v2 [hepph] UPDATED)
Authors: ByungGeel Yu, KookJin Kong
A model for the reaction $\gamma p\to\rho^\Delta^{++}$ is presented with the
$t$channel $\pi+\rho$ exchanges reggeized to describe the reaction up to high
energies. Gauge invariance of $\rho$ exchange is discussed in connection with
the convergence of the reaction cross section at high energy. The roles of
electromagnetic (EM) multipole moments of $\Delta^{++}$ baryon and of $\rho^$
meson are analyzed in total and differential cross sections and spin density
matrix elements. Photon polarization asymmetry $\Sigma$ is predicted for a
measurement of electromagnetic moments of $\rho^$ and of $\Delta^{++}$.

$\Sigma_{b}\to\Sigma_c^*$ weak decays in the lightfront quark model with two schemes to deal with the polarization of diquark. (arXiv:1711.02518v4 [hepph] UPDATED)
Authors: HongWei Ke Ning Hao, XueQian Li
Thanks to the remarkable achievements of LHC, a large database on baryons has
been accumulated, so it is believed that the time for precisely studying
baryons especially heavy baryons, has come. By analyzing the data, the
quarkdiquark structure which has been under intensive discussions, can be
tested. In this work the decay widths of weak transitions $\Sigma_b\to
\Sigma^*_c+X$ are calculated in terms of the light front quark model (LFQM). To
carry out the calculations, the quarkdiquark picture is employed where an
axialvector diquark composed of two light quarks serves as a spectator in the
concerned processes. The first step of this work is to construct the vertex
functions for $\Sigma^{(*)}_c$ and $\Sigma_b$, then the relevant form factors
are derived. It is shown that under the heavy quark limit the IsgurWise
functions for the transition are rededuced. Indeed, how to properly depict the
polarization ($\epsilon_{\mu}$) of the diquark is slightly tricky. In this
work, we apply two schemes to explicitly determine the momentumdependence of
the diquark. The corresponding numerical results are presented which will be
testified by the future experiments.

Solving the fermionic mass hierarchy of the standard model. (arXiv:1712.08052v3 [hepph] UPDATED)
Authors: Gauhar Abbas
We show that a simultaneous explanation for fermionic mass hierarchy among
and within the fermionic families, quarkmixing, can be obtained in an
extension of the standard model, with real singlet scalar fields, which is UV
completed by vectorlike fermions and a strongly interacting sector.

Catalytic effects of monopoles in QCD. (arXiv:1807.04808v2 [heplat] UPDATED)
Authors: Masayasu Hasegawa
We want to find indications that magnetic monopoles in quantum chromodynamics
(QCD) exist; therefore, we introduce a monopole and antimonopole pair in the
QCD vacuum of the quenched SU(3) by applying the monopole creation operator on
the vacuum. We investigate the catalytic effects of monopoles on chiral
symmetry breaking using the Dirac operator of the overlap fermions that
preserves the chiral symmetry in the lattice gauge theory. First, we confirm
that the eigenstate of the monopole creation operator becomes the coherent
state and that the monopole creation operator makes monopoles and
antimonopoles in the QCD vacuum. We have found the catalytic effects of
monopoles on observables by varying the values of the magnetic charges of the
additional monopole and antimonopole as follows: (i) The decay constants of
the pseudoscalar increase. (ii) The values of the chiral condensate, defined as
a negative number, decrease. (iii) The light quarks and the pseudoscalar mesons
become heavy. The catalytic effects of monopoles on the partial decay width and
the lifetime of the charged pion are estimated using the numerical results of
the pion decay constant and the pion mass. (iv) The decay width of the charged
pion becomes wider than the experimental result, and the lifetime of the
charged pion becomes shorter than the experimental result. These are the
catalytic effects of monopoles in QCD, which we find in this research.

Microlensing of Xray Pulsars: a Method to Detect Primordial Black Hole Dark Matter. (arXiv:1812.01427v2 [astroph.HE] UPDATED)
Authors: Yang Bai, Nicholas Orlofsky
Primordial black holes (PBHs) with a mass from $10^{16}$ to
$10^{11}\,M_\odot$ may comprise 100% of dark matter. Due to a combination of
wave and finite source size effects, the traditional microlensing of stars does
not probe this mass range. In this paper, we point out that Xray pulsars with
higher photon energies and smaller source sizes are good candidate sources for
microlensing for this mass window. Among the existing Xray pulsars, the Small
Magellanic Cloud (SMC) X1 source is found to be the best candidate because of
its apparent brightness and long distance from Earth. We have analyzed the
existing observation data of SMC X1 by the RXTE telescope (around 10 days) and
found that PBH as 100% of dark matter is close to but not yet excluded. Future
longer observation of this source by Xray telescopes with larger effective
areas such as AstroSat, Athena, Lynx, and eXTP can potentially close the last
mass window where PBHs can make up all of dark matter.

Systematic construction of basis invariants in the 2HDM. (arXiv:1812.02614v2 [hepph] UPDATED)
Authors: Andreas Trautner
A new systematic method for the explicit construction of (basis)invariants
is introduced and employed to construct the full ring of basis invariants of
the TwoHiggsDoubletModel (2HDM) scalar sector. Co and invariant quantities
are obtained by the use of hermitian projection operators. These projection
operators are constructed from Young tableaux via birdtrack diagrams and they
are used in two steps. First, to extract basiscovariant quantities, and
second, to combine the covariants in order to obtain the actual basis
invariants. The Hilbert series and Plethystic logarithm are used to find the
number and structure of the complete set of generating invariants as well as
their interrelations (syzygies). Having full control over the complete ring of
(CPeven and CPodd) basis invariants, we give a new and simple proof of the
necessary and sufficient conditions for explicit CP conservation in the 2HDM,
confirming earlier results by Gunion and Haber. The method generalizes to other
models, with the only foreseeable limitation being computing power.

Discovery reach for wino and higgsino dark matter with a disappearing track signature at a 100 TeV $pp$ collider. (arXiv:1901.02987v2 [hepph] UPDATED)
Authors: Masahiko Saito, Ryu Sawada, Koji Terashi, Shoji Asai
Within the theory of supersymmetry, the lightest neutralino is a dark matter
candidate and is often assumed to be the lightest supersymmetric particle (LSP)
as well. If the neutral wino or higgsino is dark matter, the upper limit of the
LSP mass is determined by the observed relic density of dark matter. If the LSP
is a nearlypure neutral state of the wino or higgsino, the lightest chargino
state is expected to have a significant lifetime due to a tiny mass difference
between the LSP and the chargino. This article presents discovery potential of
the 100 TeV future circular hadron collider (FCC) for the wino and higgsino
dark matter using a disappearingtrack signature. The search strategy to extend
the discovery reach to the thermal limits of wino/higgsino dark matter is
discussed with detailed studies on the background rate and the reference design
of the FCChadron detector under possible running scenarios of the FCChadron
machine. A proposal of modifying the detector layout and several ideas to
improve the sensitivity further are also discussed.

Probing the photonic content of the proton using photoninduced dilepton production in $p+\textrm{Pb}$ collisions at the LHC. (arXiv:1901.06305v2 [hepph] UPDATED)
Authors: Mateusz Dyndal, Alexander Glazov, Marta Luszczak, Renat Sadykov
We propose a new experimental method to probe the photon parton distribution
function inside the proton (photon PDF) at LHC energies. The method is based on
the measurement of dilepton production from the $\gamma
p\rightarrow\ell^+\ell^+X$ reaction in protonlead collisions. These
experimental conditions guarantee a clean environment, both in terms of
reconstruction of the final state and in terms of possible background. We
firstly calculate the cross sections for this process with collinear photon
PDFs, where we identify optimal choice of the scale, in analogy to deep
inelastic scattering kinematics. We then perform calculations including the
transversemomentum dependence of the probed photon. Finally we estimate rates
of the process for the existing LHC data samples.

Baryogenesis from B Meson Oscillations. (arXiv:1901.08141v2 [hepph] UPDATED)
Authors: Ann E. Nelson, Huangyu Xiao
We show how CP violating B meson oscillations in conjunction with baryon
number violating decays can generate the cosmological asymmetry between matter
and antimatter, and explore the parameter space of a simple, selfcontained
model, which can be tested via exotic B meson decays, and via the charge
asymmetry in semileptonic decays of neutral B mesons.

Anomaly matching in QCD thermal phase transition. (arXiv:1901.08188v2 [hepth] UPDATED)
Authors: Kazuya Yonekura
We study an 't Hooft anomaly of massless QCD at finite temperature. With the
imaginary baryon chemical potential at the RobergeWeiss point, there is a
$\mathbb{Z}_2$ symmetry which can be used to define confinement. We show the
existence of a mixed anomaly between the $\mathbb{Z}_2$ symmetry and the chiral
symmetry, which gives a strong relation between confinement and chiral symmetry
breaking. The anomaly is a parity anomaly in the QCD Lagrangian reduced to
three dimensions. It is reproduced in the chiral Lagrangian by a topological
term related to Skyrmion charge, matching the anomaly before and after QCD
phase transition. The effect of the imaginary chemical potential is suppresssed
in the large $N$ expansion, and we discuss implications of the 't~Hooft anomaly
matching for the nature of QCD phase transition with and without the imaginary
chemical potential. Arguments based on universality alone are disfavored, and a
first order phase transition may be the simplest possibility if the large $N$
expansion is qualitatively good.

U(1)' coupling constant at low energies from heterotic orbifolds. (arXiv:1901.10102v2 [hepph] UPDATED)
Authors: Yessenia OlguinTrejo, Omar PerezFigueroa, Ricardo PerezMartinez, Saul RamosSanchez
Additional Abelian gauge interactions are generic to string
compactifications. In heterotic string models, gauge coupling unification of
such forces and other gauge interactions is natural due to their common origin.
In this letter we study systematically the 1loop running of the coupling
constants in effective vacua emerging from Z8 heterotic orbifold
compactifications that provide the matter spectrum of the MSSM plus some
vectorlike exotics, restricting to vacua that yield a nonanomalous U(1)'
symmetry, gauge coupling unification and the observed values of known gauge
couplings. We determine the lowenergy value of the U(1)' coupling constant for
different scales of supersymmetry breakdown. We find that the U(1)' coupling
constant is quite restricted in string models to lie in the range 0.460.7 for
lowscale supersymmetry or 0.440.6 in other cases. We argue that the
phenomenology of these string vacua should be further explored to solve some
extant issues, such as the stability of the Higgs vacuum.

Spectrum of the $uudc \bar c$ hidden charm pentaquark with an SU(4) flavorspin hyperfine interaction. (arXiv:1902.07101v3 [hepph] UPDATED)
Authors: Fl. Stancu
We study a few of the lowest states of the pentaquark $uudc\overline{c}$, of
positive and negative parity, in a constituent quark model with an SU(4)
flavourspin hyperfine interaction. The pentaquark positive parity is the
antiquark parity times that of the fourquark subsystem. For positive parity we
introduce space wave functions of appropriate permutation symmetry with one
unit of orbital angular momentum in the internal motion. We show that the
lowest positive parity states $1/2^+, 3/2^+$ are located below the $1/2^$
state with all quarks in the ground state. We compare our results with the LHCb
three narrow pentaquark structures reported in 2019.

Mesons with Beauty and Charm: New Horizons in Spectroscopy. (arXiv:1902.09735v2 [hepph] UPDATED)
Authors: Estia J. Eichten, Chris Quigg
The $B_c ^+$ family of $(c\bar{b})$ mesons with beauty and charm is of
special interest among heavy quarkonium systems. The $B_c ^+$ mesons are
intermediate between $(c\bar{c})$ and $(b\bar{b})$ states both in mass and
size, so many features of the $(c\bar{b})$ spectrum can be inferred from what
we know of the charmonium and bottomonium systems. The unequal quark masses
mean that the dynamics may be richer than a simple interpolation would imply,
in part because the charmed quark moves faster in $B_c$ than in the $J/\psi$.
Close examination of the $B_c ^+$ spectrum can test our understanding of the
interactions between heavy quarks and antiquarks and may reveal where
approximations break down. ...

The quenched SU(2) scalargluon vertex in minimal Landau gauge. (arXiv:1902.10568v2 [heplat] UPDATED)
Authors: Axel Maas
The question of whether confining effects are visible in correlation
functions is a longstanding one. Complementing investigations on the
propagators of fundamental and adjoint scalar matter particles here the
quenched scalargluon vertex is investigated. For this purpose a multitude of
lattice setups in two, three, and four dimensions is analyzed in quenched SU(2)
lattice gauge theory. Though both cases are quantitatively different, neither a
qualitative difference nor any singularities are observed.

On the Origin of TwoLoop Neutrino Mass from SU(5) Grand Unification. (arXiv:1902.11254v2 [hepph] UPDATED)
Authors: Shaikh Saad
In this work we propose a renormalizable model based on the $SU(5)$ gauge
group where neutrino mass originates at the twoloop level without extending
the fermionic content of the Standard Model (SM). Unlike the conventional
$SU(5)$ models, in this proposed scenario, neutrino mass is intertwined with
the charged fermion masses. In addition to correctly reproducing the SM charged
fermion masses and mixings, neutrino mass is generated at the quantum level,
hence naturally explains the smallness of neutrino masses. In this setup, we
provide examples of gauge coupling unification that simultaneously satisfy the
proton decay constraints. This model has the potential to be tested
experimentally by measuring the proton decay in the future experiments. Scalar
leptoquarks that are naturally contained within this framework can accommodate
the recent Bphysics anomalies.

Application of the path optimization method to the sign problem in an effective model of QCD with a repulsive vectortype interaction. (arXiv:1903.03679v2 [heplat] UPDATED)
Authors: Kouji Kashiwa, Yuto Mori, Akira Ohnishi
The path optimization method is applied to a QCD effective model with the
Polyakov loop and the repulsive vectortype interaction at finite temperature
and density to circumvent the model sign problem. We show how the path
optimization method can increase the average phase factor and control the model
sign problem. This is the first study which correctly treats the repulsive
vectortype interaction in the QCD effective model with the Polyakovloop via
the Markovchain MonteCarlo approach. It is shown that the complexification of
the temporal component of the gluon field and also the vectortype auxiliary
field are necessary to evade the model sign problem within the standard
pathintegral formulation.

Neutrino Topology Reconstruction at DUNE and Applications to Searches for Dark Matter Annihilation in the Sun. (arXiv:1903.04175v2 [astroph.HE] UPDATED)
Authors: Carsten Rott, DongYoung Jeong, Jason Kumar, David Yaylali
We consider a new technique for neutrino energy and topology reconstruction
at DUNE. In particular, we show that when the direction of the incoming
neutrino is known, one can use the measured directions of the outgoing leptonic
and hadronic particles to reconstruct poorlymeasured quantities, such as the
hadronic cascade energy. We show that this alternative technique yields an
energy resolution which is comparable to current reconstruction methods which
sum measured energies. As a proof of concept we apply this new reconstruction
method to a search for dark matter annihilation in the Sun. We show that the
use of directional information from both the leptonic and hadronic interaction
products allows one to effectively reject backgrounds and isolate the signal,
giving competitive sensitivities.

Theta dependence of the vacuum energy density in chiral effective Lagrangian models at finite temperature, above $T_c$. (arXiv:1903.10307v2 [hepph] UPDATED)
Authors: Enrico Meggiolaro
In this work, extending a previous study at zero temperature ($T=0$), we
perform a systematic study of the modifications to the QCD vacuum energy
density $\epsilon_{vac}$ in the finitetemperature case, above the chiral
transition at $T_c$, caused by a nonzero value of the parameter $\theta$, using
two different effective Lagrangian models which implement the $U(1)$ axial
anomaly of the fundamental theory and which are both well defined also above
$T_c$. In particular, we derive (and critically compare) the expressions for
the topological susceptibility $\chi$ and for the second cumulant $c_4$
starting from the $\theta$ dependence of $\epsilon_{vac}(\theta)$ in the two
models.

Offshell singletopquark production in the Standard Model Effective Field Theory. (arXiv:1903.11023v2 [hepph] UPDATED)
Authors: Tobias Neumann, Zack Sullivan
We present a fully differential and spindependent $t$channel
singletopquark calculation at nexttoleading order (NLO) in QCD including
offshell effects by using the complex mass scheme in the Standard Model (SM)
and in the Standard Model Effective Field Theory (SMEFT). We include all
relevant SMEFT operators at $1/\Lambda^2$ that contribute at NLO in QCD for a
fully consistent comparison to the SM at NLO. In addition, we include chirality
flipping operators that do not interfere with the SM amplitude and contribute
only at $1/\Lambda^4$ with a massless $b$quark. Such higher order effects are
usually captured by considering anomalous righthanded $Wtb$ and lefthanded
$Wtb$ tensor couplings. Despite their formal suppression in the SMEFT, they
describe an important class of models for new physics. Our calculation and
analysis framework is publicly available in MCFM.

Emergence of a complete heavyquark spin symmetry multiplet: seven molecular pentaquarks in light of the latest LHCb analysis. (arXiv:1903.11560v3 [hepph] UPDATED)
Authors: MingZhu Liu, YaWen Pan, FangZheng Peng, Mario Sanchez Sanchez, LiSheng Geng, Atsushi Hosaka, Manuel Pavon Valderrama
A recent analysis by the LHCb collaboration suggests the existence of three
narrow pentaquarklike states  the $P_c(4312)$,$P_c(4440)$ and $P_c(4457)$
 instead of just one in the previous analysis (the $P_c(4450)$). The
closeness of the $P_c(4312)$ to the $\bar{D} \Sigma_c$ threshold and the
$P_c(4440)$/$P_c(4457)$ to the $\bar{D}^* \Sigma_c$ one suggests a molecular
interpretation of these resonances. We show that these three pentaquarklike
resonances can be naturally accommodated in a contactrange effective field
theory description that incorporates heavyquark spin symmetry. This
description leads to the prediction of all the seven possible Swave heavy
antimesonbaryon molecules (that is, there should be four additional molecular
pentaquarks in addition to the $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$),
providing the first example of a heavyquark spin symmetry molecular multiplet
that is complete. If this is confirmed, it will not only give us an impressive
example of the application of heavyquark symmetries and effective field
theories in hadron physics: it will also uncover a clear and powerful ordering
principle for the molecular spectrum, reminiscent of the SU(3)flavor
multiplets to which the light hadron spectrum conforms.

Strong decays of doublecharmed pseudoscalar and scalar $cc\overline{u}\overline{d}$ tetraquarks. (arXiv:1903.11975v3 [hepph] UPDATED)
Authors: S. S. Agaev, K. Azizi, H. Sundu
The strong decays of the pseudoscalar and scalar doublecharmed tetraquarks $
T_{cc;\overline{u}\overline{d}}^{+}$ and $\widetilde{T}_{cc;\overline{u}
\overline{d}}^{+}$ are investigated in the framework of the QCD sum rule
method. The mass and coupling of these exotic fourquark mesons are calculated
in the framework of the QCD twopoint sum rule approach by taking into account
vacuum condensates of the quark, gluon, and mixed local operators up to
dimension 10. Our results for masses $m_{T}=(4130~\pm 170)~ \mathrm{MeV} $ and
$m_{\widetilde{T}}=(3845~\pm 175)~\mathrm{MeV}$ demonstrate that these
tetraquarks are stronginteraction unstable resonances and decay to
conventional mesons through the channels $T_{cc; \overline{u}\overline{d}}^{+}
\to D^{+}D^{\ast }(2007)^{0},~D^{0}D^{\ast }(2010)^{+}$ and
$\widetilde{T}_{cc;\overline{u}\overline{d}}^{+}\to D^{+}D^{0}$. Key quantities
necessary to compute the partial width of these decay modes, i.e., the strong
couplings of two $D$ mesons and a corresponding tetraquark $g_i,~i=1,2$, and
$G$ are extracted from the QCD threepoint sum rules. The full width $\Gamma
_{T}=(129.9\pm 23.5)~\mathrm{ MeV}$ demonstrates that the tetraquark
$T_{cc;\overline{u}\overline{d}}^{+}$ is a broad resonance, whereas the scalar
exotic meson with $\Gamma _{ \widetilde{T}}=(12.4\pm 3.1)~\mathrm{MeV}$ can be
classified as a relatively narrow state.

Revisiting $\Lambda_{b}\to\Lambda_{c}$ and $\Sigma_{b}\to\Sigma_{c}$ weak decays in the lightfront quark model. (arXiv:1904.05705v2 [hepph] UPDATED)
Authors: HongWei Ke, Ning Hao, XueQian Li
In this work, we study $\Lambda_{b}\to\Lambda_{c}$ and
$\Sigma_{b}\to\Sigma_{c}$ weak decays in the lightfront quark model. As is
well known, the key point for such calculations is properly evaluating the
hadronic transition matrix elements which are dominated by the nonperturbative
QCD effect. In our calculation, we employ the lightfront quark model and
rather than the traditional diquark picture, we account the two spectator light
quarks as individual ones. Namely during the transition, they retain their
color indices, momenta and spin polarizations unchanged. Definitely, the
subsystem composed of the two light quarks is still in a colorantitriplet and
possesses a definite spin, but we do not priori assume the two light quarks to
be in a bound systemdiquark. Our purpose is probing the diquark picture, via
comparing the results with the available data, we test the validity and
applicability of the diquark structure which turns a threebody problem into a
twobody one, so greatly simplifies the calculation. It is indicated that the
two approaches (diquark and a subsystem within which the two light quarks are
free) lead to similar numerical results even though the model parameters in the
two schemes might deviate slightly. Thus, the diquark approach seems
sufficiently reasonable.

Effective gauge theories of superfluidity with topological order. (arXiv:1904.08570v2 [hepth] UPDATED)
Authors: Yuji Hirono, Yuya Tanizaki
We discuss the lowenergy dynamics of superfluidity with topological order in
$(3+1)$ spacetime dimensions. We generalize a topological $BF$ theory by
introducing a nonsquare $K$ matrix, and this generalized $BF$ theory can
describe massless NambuGoldstone bosons and anyonic statistics between
vortices and quasiparticles. We discuss the general structure of discrete and
continuous higherform symmetries in this theory, which can be used to classify
quantum phases. We describe how to identify the appearance of topological order
in such systems and discuss its relation to a mixed 't Hooft anomaly between
discrete higherform symmetries. We apply this framework to the colorflavor
locked phase of dense QCD, which shows anyonic particlevortex statistics while
no topological order appears. An explicit example of superfluidity with
topological order is discussed.

Bmeson charged current anomalies: the postMoriond status. (arXiv:1904.10432v3 [hepph] UPDATED)
Authors: Debjyoti Bardhan, Diptimoy Ghosh
In this note, we discuss the impact of the recent Belle result on the various
theoretical explanations of the $R_D$ and $R_{D^*}$ anomalies. The pure tensor
explanation, which was strongly disfavoured by the measurements of $F_L^{D^*}$
and high$p_T$ $p \, p \to \tau \, \nu$ searches before Moriond, is now
completely allowed because of reduction of the experimental worldaverage.
Moreover, the pure rightchiral vector solution (involving rightchiral
neutrinos) has now moved into the $2\sigma$ allowed range of the LHC $p \, p
\to \tau \, \nu$ searches. We also critically reexamine the bound on
$\mathcal{B}(B_c^ \to \tau^ \bar{\nu}_\tau)$ from LEP data and show that the
bound is considerably weaker than the number $10\%$ often used in the recent
literature.

Bouncing Universe from Nothing. (arXiv:1904.12312v3 [grqc] UPDATED)
Authors: Hiroki Matsui, Fuminobu Takahashi, Takahiro Terada
We find a class of solutions for a homogeneous and isotropic universe in
which the initially expanding universe stops expanding, experiences
contraction, and then expands again (the "bounce"), in the framework of
Einstein gravity with a real scalar field without violating the null energy
condition nor encountering any singularities. Two essential ingredients for the
bouncing universe are the positive spatial curvature and the scalar potential
which becomes flatter at large field values. Depending on the initial
condition, either the positive curvature or the negative potential stops the
cosmic expansion and begins the contraction phase. The flat potential plays a
crucial role in triggering the bounce. After the bounce, the flat potential
naturally allows the universe to enter the slowroll inflation regime, thereby
making the bouncing universe compatible with observations. If the efolding of
the subsequent inflation is just enough, a positive spatial curvature may be
found in the future observations. Our scenario nicely fits with the creation of
the universe from nothing, which leads to the homogeneous and isotropic
universe with positive curvature. As a variant of the mechanism, we also find
solutions representing a cyclic universe.

Novel ideas in nonleptonic decays of double heavy baryons. (arXiv:1905.06219v2 [hepph] UPDATED)
Authors: Thomas Gutsche, Mikhail A. Ivanov, Jürgen G. Körner, Valery E. Lyubovitskij
The recent discovery of double charm baryon states by the LHCb Collaborarion
and their high precision mass determination calls for a comprehensive analysis
of the nonleptonic decays of double and single heavy baryons. Nonleptonic
baryon decays play an important role in particle phenomenology since they allow
to study the interplay of long and short distance dynamics of the Standard
Model (SM). Further, they allow one to search for New Physics effects beyond
the SM. We review recent progress in experimental and theoretical studies of
the nonleptonic decays of heavy baryons with a focus on double charm baryon
states and their decays. In particular, we discuss new ideas proposed by the
present authors to calculate the $W$exchange matrix elements of the
nonleptonic decays of double heavy baryons. An important ingredient in our
approach is the compositeness condition of Salam and Weinberg, and an effective
implementation of infrared confinement both of which allow one to describe the
nonperturbative structure of baryons composed of light and heavy quarks.
Further we discuss an ab initio calculational method for the treatment of the
socalled $W$exchange diagrams generated by $W^{\pm}$ boson exchange between
quarks. We found that the $W^{\pm}$exchange contributions are not suppressed
in comparison with the treelevel (factrorizing) diagrams and must be taken
into account in the evaluation of matrix elements. Moreover, there are decay
processes such as the doubly Cabibbosuppressed decay $\Xi_c^+ \to p \phi$
recently observed by the LHCb Collaboration which is contributed to only by one
single $W$exchange diagram.

Incomplete equilibration in highmultiplicity pp and pPb events at LHC. (arXiv:1905.06532v2 [hepph] UPDATED)
Authors: Nachiketa Sarkar, Paramita Deb, Premomoy Ghosh
Multiple Reflection Expansion (MRE) formalism has been introduced to the
hadron resonance gas model to study the finitesize effect on the chemical
freezeout of equilibrated hadron gas, likely to be produced in
highmultiplicity events of pp, pA and AA collisions at LHC and RHIC. The
degree of equilibration at the freezeout for different colliding systems has
been compared, in terms of thermodynamic variables, by contrasting ideal
equilibrium conditions provided by firstprinciple LQCD calculations. In
contrast to AA collisions, the freezeout condition in the highmultiplicity pp
and pA events remain away from the ideal thermodynamic limit, indicating
incomplete equilibration. Quantitative comparison in terms of Knudsen number
confirms the finding.

Charged Higgs bosons in the NMSSM under current LHC constraints. (arXiv:1905.09412v2 [hepph] UPDATED)
Authors: Zhaoxia Heng, Lin Guo, Pengqiang Sun, Wei Wei
Charged Higgs boson is a crucial prediction of new physics beyond the SM. In
this work, we perform a comprehensive scan over the parameter space of NMSSM
considering various experimental constraints including the direct search limits
from the 13 TeV LHC, and consider the scenario that the nexttolightest
CPeven Higgs boson is SMlike. We find that the masses of charged Higgs bosons
can be as light as 350 GeV, the lightest CPeven Higgs boson $h_1$ is
predominantly singlet and can be as light as 48 GeV, and the lightest CPodd
Higgs boson $a_1$ is also singletdominated and can be as light as 82 GeV. The
charged Higgs bosons mainly decay to $t\bar{b}$ or $\bar{t} b$, but the
branching ratio of the exotic decays $H^\pm\to W^\pm h_1$ and $H^\pm\to W^\pm
a_1$ can maximally reach to 20\% and 11\%, respectively, which can be used to
distinguish the NMSSM from MSSM. Such a heavy charged Higgs boson is
unaccessible at the 13 TeV LHC with a luminosity of 36.1 $\rm fb^{1}$ and its
detection needs higher energy and/or higher luminosity.

Canonical interpretation of $Y(10750)$ and $\Upsilon(10860)$ in the $\Upsilon$ family. (arXiv:1905.10344v2 [hepph] UPDATED)
Authors: Qi Li, MingSheng Liu, QiFang Lü, LongCheng Gui, XianHui Zhong
Inspired by the new resonance $Y(10750)$, we calculate the masses and
twobody OZIallowed strong decays of the higher vector bottomonium sates
within both screened and linear potential models. We discuss the possibilities
of $\Upsilon(10860)$ and $Y(10750)$ as mixed states via the $SD$ mixing. Our
results suggest that $Y(10750)$ and $\Upsilon(10860)$ might be explained as
mixed states between $5S$ and $4D$wave vector $b\bar{b}$ states. The
$Y(10750)$ and $\Upsilon(10860)$ resonances may correspond to the mixed states
dominated by the $4D$ and $5S$wave components, respectively. The mass and the
strong decay behaviors of the $\Upsilon(11020)$ resonance are consistent with
the assignment of the $\Upsilon(6S)$ state in the potential models.

Impact of Nonperturbative QCD on CP Violation in ManyBody Final States of Flavor Transitions. (arXiv:1905.10871v3 [hepph] UPDATED)
Authors: I. I. Bigi
The title of my talk pointed out central statements: the impact of
nonperturbative QCD on {\bf CP} asymmetries in manybody FS in charm \& beauty
hadrons. For practical reasons one measures first {\bf CP} violation in
twobody final states of heavy flavor hadrons. However, those are small parts
of charm hadrons and tiny ones for beauty hadrons; therefore one has to probe
{\bf CP} asymmetries in three \& fourbody final states. Thus the transitions
to the manybody FS basically give information about the underlying dynamics.
The impact of nonperturbative QCD on {\bf CP} asymmetries in manybody FS
shows that  in principle; it is a true challenge even in a semiquantitative
way. One needs correlations with other transitions. That is my strategy;
however, I have to discuss the tactics on the same level like using consistent
parameterization of the CKM matrix. Our community has entered a novel era:
direct {\bf CP} violation has been found in $D^0 \to h^+h^$ decays
\cite{CHARM}. Finally I give short comments about the possible impact of New
Dynamics on direct {\bf CP} violation in $K_L \to 2 \pi$ and probe {\bf CP}
asymmetry in $J/\psi \to \bar \Lambda \Lambda$ transitions.

Is the $Y(2175)$ a Strangeonium Hybrid Meson?. (arXiv:1905.12779v2 [hepph] UPDATED)
Authors: J. Ho, R. Berg, T. G. Steele, W. Chen, D. Harnett
QCD Gaussian sumrules are used to explore the vector ($J^{PC}=1^{}$)
strangeonium hybrid interpretation of the $Y(2175)$. Using a tworesonance
model consisting of the $Y(2175)$ and an additional resonance, we find that the
relative resonance strength of the $Y(2175)$ in the Gaussian sumrules is less
than 5\% that of a heavier 2.9 GeV state. This small relative strength presents
a challenge to a dominantlyhybrid interpretation of the $Y(2175)$.

Limits on the Charged Higgs Parameters in the Two Higgs Doublet Model using CMS $\sqrt{s}=13$ TeV Results. (arXiv:1906.02520v2 [hepph] UPDATED)
Authors: Prasenjit Sanyal
Latest CMS results on the upper limits on $\sigma_{H^\pm}$BR($H^\pm
\rightarrow \tau^\pm\nu)$ and $\sigma_{H^\pm}$BR($H^+ \rightarrow t\bar{b}$)
for $\sqrt{s}=13$ TeV at an integrated luminosity of 35.9 fb$^{1}$ are used to
impose constraints on the charged Higgs $H^\pm$ parameters within the Two Higgs
Doublet Model (2HDM). The 2HDM is the simplest extension of Standard Model (SM)
under the same gauge symmetry to contain charged Higgs and is relatively less
constrained compared to Minimal Supersymmetric Standard Model (MSSM). The
latest results lead to much more stringent constraints on charged Higgs
parameter space in comparison to the earlier 8 TeV results. The CMS
collaboration also studied the exotic bosonic decay $H^\pm \rightarrow W^\pm A$
and $A \rightarrow \mu^+ \mu^$ for the first time and put upper limits on the
BR($t\rightarrow H^+ b$) for light charged Higgs. These constraints lead to
exclusion of parameter space which are not excluded by the $\tau \nu$ channel.
For comparison the exclusion regions from flavour physics constraints are also
discussed.

Thermal Field Theory of the Tsallis statistics. (arXiv:1906.02893v2 [hepph] UPDATED)
Authors: Mahfuzur Rahaman, Trambak Bhattacharyya, Jane Alam
Classical and quantum Tsallis distributions have been widely used in many
branches of natural and social sciences. But, the quantum field theory of the
Tsallis distributions is relatively a less explored arena. In this article we
derive the expression for the thermal twopoint functions for the Tsallis
statistics with the help of the corresponding statistical mechanical
formulations. We show that the quantum Tsallis distributions used in the
literature appear in the thermal part of the propagator much in the same way
the BoltzmannGibbs distributions appear in the conventional thermal field
theory. As an application of our findings, thermal mass of the real scalar
bosons subjected to phi^4 interaction has been calculated in the Tsallis
statistics.

m_c and m_b from M_B_c and new estimate of f_B_c. (arXiv:1906.03614v2 [hepph] UPDATED)
Authors: Stephan Narison (CNRSMontpellier)
We extract (for the first time) the correlated values of the running masses
m_c and m_b from M_Bc using QCD Laplace sum rules (LSR) within stability
criteria where pertubative (PT) expressions at N2LO and nonperturbative (NP)
gluon condensates at LO are included. We deduce : m_c(m_c) = 1275(11) MeV and
m_b(m_b) = 4216(10) MeV. Combined with our recent estimates from charmonium,
bottomium and D, B sum rules, we deduce the new QCD Spectral Sum Rules (QSSR)
global average m_c(m_c) = 1266(5) MeV and m_b(m_b) = 4199(6) MeV. As a result,
we present an improved prediction of f_B_c =431(7)MeV.

Chromopolarizabilities of bottomonia from the $\Upsilon(2S,3S,4S) \to \Upsilon(1S,2S)\pi\pi$ transitions. (arXiv:1906.05766v2 [hepph] UPDATED)
Authors: YunHua Chen, FengKun Guo
The dipion transitions $\Upsilon(2S,3S,4S) \to \Upsilon(1S,2S)\pi\pi$ are
systemaically studied by considering the mechanisms of the hadronization of
soft gluons, exchanging the bottomoniumlike $Z_b$ states, and the bottommeson
loops. The strong pionpion finalstate interaction, especially including the
channel coupling to $K\bar{K}$ in the $S$wave, is taken into account in a
modelindependent way using the dispersion theory. Through fitting to the
available experimental data, we extract values of the transition
chromopolarizabilities $\alpha_{\Upsilon(mS)\Upsilon(nS)}$, which measure the
chromoelectric couplings of the bottomonia with soft gluons. It is found that
the $Z_b$ exchange has a large impact on the extracted chromopolarizablity
values. The obtained $\alpha_{\Upsilon(2S)\Upsilon(1S)}$ considering the
$Z_b$ exchange is $(2.9\pm 2.0)\times 10^{2}~\text{GeV}^{3}$, about one order
of magnitude smaller than the one without considering the $Z_b$ exchange
effect. This indicates that the interactions of bottomonia with light hadrons
through exchanging soft gluons are very weak, and the $u$channel exchange of
the $Z_b$ states should be much more important for the $\Upsilon\pi$ scattering
than the $t$channel softgluon exchange.
