Thu·Oct 10, 2019Thursday·October 10, 2019

1. 01*

   O new physics, where art thou? A global search in the top sector

   I. Brivio🇩🇪 · S. Bruggisser🇩🇪 · F. Maltoni🇧🇪 · R. Moutafis🇩🇪 · T. Plehn🇩🇪 · E. Vryonidou🇨🇭 · S. Westhoff🇩🇪 · C. Zhang🇨🇳

   We provide a comprehensive global analysis of Run II top measurements at the LHC in terms of dimension-6 operators. A distinctive feature of the top sector as compared to the Higgs-electroweak sector is the large number of four-quark operators. We discuss in detail how they can be tested and how quadratic terms lead to a stable limit on each individual Wilson coefficient. Predictions for all observables are computed at NLO in QCD. Our SFitter analysis framework features a detailed error treatment and shows that theoretical uncertainties are a limiting factor.

   hep-phJHEP(2020)·260 citations
2. 02*

   Schwinger-based QCD formulation's derivation of elastic pp scattering

   H.M.Fried · Y.Gabellini · T.Grandou · Y.M.Sheu · P.H.Tsang

   Using previously described functional techniques for some non-perturbative, gauge invariant, renormalized QCD processes, a simplified version of the amplitudes - in which forms akin to Pomerons naturally appear - provides fits to ISR and LHC-TOTEM pp elastic scattering data. Those amplitudes rely on a specific function $\varphi (b)$ which describes the fluctuations of the transverse position of quarks inside hadrons.

   hep-phhep-th0 citations
3. 03*

   Double parton distribution of valence quarks in the pion in chiral quark models

   Wojciech Broniowski🇵🇱 · Enrique Ruiz Arriola🇪🇸

   The valence double parton distribution of the pion is analyzed in the framework of chiral quark models, where in the chiral limit factorization between the longitudinal and transverse degrees of freedom occurs. This feature leads, at the quark-model scale, to a particularly simple distribution of the form $D(x_1,x_2,\vec{q})=\delta (1-x_1-x_2)F(\vec{q})$, where $x_{1,2}$ are the longitudinal momentum fractions carried the valence quark and antiquark and $\vec{q}$ is their relative transverse momentum. For $\vec{q}=\vec{0}$ this result complies immediately to the Gaunt-Sterling sum rules. The DGLAP evolution to higher scales is carried out in terms of the Mellin moments. We then explore its role on the longitudinal correlation quantified with the ratio of the double distribution to the product of single distributions, $D(x_1,x_2,\vec{q}=\vec{0})/D(x_1)D(x_2)$. We point out that the ratios of moments $⟨x_1^n{x}_2^m⟩/⟨x_1^n⟩⟨x_2^m⟩$ are independent of the evolution, providing particularly suitable measures to be tested in the upcoming lattice simulations. The transverse form factor $F(\vec{q})$ and its Fourier conjugate in the relative transverse coordinate $\vec{b}$ are obtained in variants of the Nambu--Jona-Lasinio model with the spectral and Pauli-Villars regularizations.The results are valid in the soft-momentum domain. Interestingly, with the spectral regularization of the model, the effective cross section for the double parton scattering of pions is exactly equal to the geometric cross section, ${\sigma }_{\mathrm{eff}}=\pi ⟨{\vec{b}}^2⟩$ and yields about 20~mb.

   hep-phPRD(2020)·21 citations
4. 04*

   The projections on $ZZ\gamma$ and $Z\gamma \gamma$ couplings via $\nu \bar{\nu }\gamma$ production in HL-LHC and HE-LHC

   A. Senol🇹🇷 · H. Denizli🇹🇷 · A. Yilmaz🇹🇷 · I. Turk Cakir🇹🇷 · O. Cakir🇹🇷

   We investigate the sensitivity of the anomalous dimension-8 neutral triple gauge couplings via process $pp\to \nu \nu \gamma$ with fast detector simulation including pile-up effects for the post LHC experiments. The transverse momentum of the final state photon and missing energy transverse distributions are considered in the analysis. We obtain the sensitivity to the $C_{\tilde{B}W}/{\Lambda }^4$, $C_{BB}/{\Lambda }^4$, $C_{WW}/{\Lambda }^4$ and $C_{BW}/{\Lambda }^4$ couplings at HL-LHC and HE-LHC with an integrated luminosity of 3 ab${}^{-1}$ and 15 ab${}^{-1}$, respectively. Finally, our numerical results show that one can reach the constraints at 95\% confidence level without systematic error on $C_{\tilde{B}W}/{\Lambda }^4$, $C_{BB}/{\Lambda }^4$, $C_{WW}/{\Lambda }^4$ and $C_{BW}/{\Lambda }^4$ couplings for HL-LHC (HE-LHC) as [-0.38;0.38] ([-0.12;0.12]), [-0.21;0.21]([-0.085;0.085]), [-1.08;1.08]([-0.38;0.38]) and [-0.48;0.48]([-0.25;0.25]), respectively. They are better than the experimental limits obtained by LHC.

   hep-phPLB(2020)·13 citations
5. 05*

   Muon $g-2$ and scalar leptoquark mixing

   Ilja Doršner🇭🇷 · Svjetlana Fajfer🇸🇮 · Olcyr Sumensari🇮🇹

   The observed muon anomalous magnetic moment deviates from the Standard Model predictions. There are two scalar leptoquarks with simultaneous couplings to the quark-muon pairs of both chiralities that can singly explain this discrepancy. We discuss an alternative mechanism that calls for the mixing of two scalar leptoquarks of the same electric charge through the interaction with the Higgs field, where the two leptoquarks separately couple to the quark-muon pairs of opposite chirality structures. Three scenarios that satisfy this requirement are $S_1\&S_3$, ${\tilde{S}}_1\&S_3$, and ${\tilde{R}}_2\&R_2$, where the first scenario is realised with the up-type quarks running in the loops while the other two scenarios proceed through the down-type quark loops. We introduce only two non-zero Yukawa couplings to the relevant quarks and a muon, at the time, to study ability of these three scenarios to explain $(g-2{)}_{\mu }$ and be in accord with available experimental constraints. We find that the $S_1\&S_3$ scenario with the top-quark loops is consistent with all existing measurements. The ${\tilde{S}}_1\&S_3$ and ${\tilde{R}}_2\&R_2$ scenarios can accommodate the observed discrepancy through the bottom-quark loops but exhibit significant tension with the existing data on the high-$p_T$ dilepton-tails at LHC for the required values of Yukawa couplings and leptoquark masses.

   hep-phJHEP(2020)·81 citations
6. 06*

   Heavy-flavour observables in relativistic nuclear collisions: theory overview

   Andrea Beraudo🇮🇹

   Transport calculations represent the major tool to simulate the modifications induced by the presence of a hot-deconfined medium on the production of heavy-flavour particles in high-energy nuclear collisions. After a brief description of the approach and of the major achievements in its phenomenological applications we discuss some recent developments. From the theory side we focus on the evaluation of transport coefficients and on recent formulations of the problem of heavy-flavour in-medium propagation in the language of open quantum systems. From a more phenomenological perspective we give an overview of the attempts to extend theoretical models to reproduce recent experimental data arising from event-by-event fluctuations (odd flow harmonics, event-shape-engineering) or from medium-modifications of hadronization ($D_s$ and ${\Lambda }_c$ production)

   hep-phnucl-thJ.Phys.Conf.Ser.(2020)·0 citations
7. 07*

   Diffractive dissociation in oniu-nucleus scattering from a partonic picture

   Dung Le Anh🇫🇷

   We present a partonic picture for diffractive onium-nucleus scattering in the large-number-of-color limit from which the distribution of rapidity gaps in a certain kinematic region can be deduced. This picture allows us to draw a parallel between diffractive dissociation and the genealogy of partonic evolution, the latter being essentially similar to a branching-diffusion process in which the branching is the parton splitting, and the diffusion occurs in the transverse momenta of the partons. In particular, we show that the rapidity gap distribution corresponds to the distribution of the splitting rapidity of the last common ancestor of the partons whose transverse momenta are smaller than the nuclear saturation scale, when the scattering process is viewed in the restframe of the nucleus. Numerical calculations are also implemented to support the analytical predictions.

   hep-ph1 citation
8. 08*

   Rabi Experiments on the $\sigma$ and $\pi$ Hyperfine Transitions in Hydrogen and Status of ASACUSA's Antihydrogen Program

   M. C. Simon (on behalf of the ASACUSA collaboration)🇦🇹

   We report on the status of the in-beam hyperfine-structure measurements on ground-state antihydrogen by ASACUSA and on recent results obtained in supporting measurements from hydrogen. The ${\sigma }_1$ and ${\pi }_1$ transitions can now be investigated, which is beneficial from both theoretical and experimental perspectives. We discuss systematic effects from resonance interference originating from the chosen field geometries in the interaction region, and how their impact can be managed by appropriate data-taking or design concepts.

   hep-phhep-exphysics.atom-ph2 citations
9. 09*

   Structure and decays of hidden heavy pentaquarks

   Thomas Gutsche🇩🇪 · Valery E. Lyubovitskij🇩🇪

   We study the hadronic molecular structure of hidden heavy pentaquarks - new exotic states composed of charmed/bottom baryons and $D(D^{\ast })/B(B^{\ast })$ mesons. Based on the observation of three pentaquark candidates $P_c^{+}(4312)$, $P_c^{+}(4440)$, and $P_c^{+}(4457)$ by the LHCb Collaboration we consider the classification of possible flavor partners composed of charmed baryons and $D(D^{\ast })$ mesons within the hadronic molecular approach. We extend this classification to the bottom sector. Using phenomenological Lagrangians we construct baryon-meson bound states governed by the Weinberg-Salam compositeness condition. As an application we consider strong two-body decays of the new exotic states into a light baryon and $V=J/\psi ,{\rm Y}$ or $P={\eta }_c,{\eta }_b$ mesons. Results are presented in the heavy quark limit.

   hep-phPRD(2019)·61 citations
10. 10*

    Hyperasymptotic approximation to the operator product expansion

    Cesar Ayala🇨🇱 · Xabier Lobregat🇪🇸 · Antonio Pineda🇪🇸

    These proceedings review recent work on hyperasymptotic constructions to the operator product expansion. Quantities we consider are the static potential and the pole mass.

    hep-phhep-thNucl.Part.Phys.Proc.(2020)·9 citations
11. 11*

    QCD Axion Dark Matter from a Late Time Phase Transition

    Keisuke Harigaya🇺🇸 · Jacob M. Leedom🇺🇸

    We investigate the possibility that the Peccei-Quinn phase transition occurs at a temperature far below the symmetry breaking scale. Low phase transition temperatures are typical in supersymmetric theories, where symmetry breaking fields have small masses. We find that QCD axions are abundantly produced just after the phase transition. The observed dark matter abundance is reproduced even if the decay constant is much lower than $10^{11}$ GeV. The produced axions tend to be warm. For some range of the decay constant, the effect of the predicted warmness on structure formation can be confirmed by future observations of 21 cm lines. A portion of parameter space requires a mixing between the Peccei-Quinn symmetry breaking field and the Standard Model Higgs, and predicts an observable rate of rare Kaon decays.

    hep-phastro-ph.COJHEP(2020)·46 citations
12. 12*

    Axion Emission Can Explain a New Hard $X$-ray Excess from Nearby Isolated Neutron Stars

    Malte Buschmann🇺🇸 · Raymond T. Co🇺🇸 · Christopher Dessert🇺🇸 · Benjamin R. Safdi🇺🇸

    Axions may be produced thermally inside the cores of neutron stars (NSs), escape the stars due to their feeble interactions with matter, and subsequently convert into X-rays in the magnetic fields surrounding the stars. We show that a recently-discovered excess of hard X-ray emission in the 2 - 8 keV energy range from the nearby Magnificent Seven isolated NSs could be explained by this emission mechanism. These NSs are unique in that they had previously been expected to only produce observable flux in the UV and soft X-ray bands from thermal surface emission at temperatures ~100 eV. No conventional astrophysical explanation of the Magnificent Seven hard X-ray excess exists at present. We show that the hard X-ray excess may be consistently explained by an axion-like particle with mass $m_a\lesssim 2\times 10^{-5}$ eV and $g_{a\gamma \gamma }\times g_{ann}\in (2\times 10^{-21},10^{-18})$ GeV${}^{-1}$ at 95\% confidence, accounting for both statistical and theoretical uncertainties, where $g_{a\gamma \gamma }$ ($g_{ann}$) is the axion-photon (axion-neutron) coupling constant.

    hep-phastro-ph.HEPRL(2021)·98 citations
13. 13*

    A Global View of the Off-Shell Higgs Portal

    Maximilian Ruhdorfer🇩🇪 · Ennio Salvioni🇩🇪 · Andreas Weiler🇩🇪

    We study for the first time the collider reach on the derivative Higgs portal, the leading effective interaction that couples a pseudo Nambu-Goldstone boson (pNGB) scalar Dark Matter to the Standard Model. We focus on Dark Matter pair production through an off-shell Higgs boson, which is analyzed in the vector boson fusion channel. A variety of future high-energy lepton colliders as well as hadron colliders are considered, including CLIC, a muon collider, the High-Luminosity and High-Energy versions of the LHC, and FCC-hh. Implications on the parameter space of pNGB Dark Matter are discussed. In addition, we give improved and extended results for the collider reach on the marginal Higgs portal, under the assumption that the new scalars escape the detector, as motivated by a variety of beyond the Standard Model scenarios.

    hep-phhep-exSciPost Phys.(2020)·88 citations
14. 14*

    Flavon alignments from orbifolding: $SU(5)\times SU(3)$ model with ${\mathbb{T}}^6/\Delta (54)$

    Francisco J. de Anda🇲🇽 · Stephen F. King🇬🇧 · Elena Perdomo🇬🇧 · Patrick K.S. Vaudrevange🇩🇪

    We systematically develop the formalism necessary for ensuring that boundary conditions of flavon fields in extra dimensions are consistent with heterotic string theory. Having developed a set of consistency conditions on the boundary conditions, we explore a series of examples of orbifolds in various dimensions to see which ones can satisfy them. In addition we impose the further phenomenological requirements of having non-trivial flavon vacuum alignments and also of having quarks and leptons located appropriately in extra dimensions. The minimal successful case seems to be a 10d theory with a $SU(3{)}_{fl}$ gauged flavour symmetry, where the six-dimensional torus is compactified on a ${\mathbb{T}}^6/\Delta (54)$ orbifold. We construct a realistic $SU(5)$ grand unified theory along these lines, leading to tribimaximal-reactor lepton mixing, which we show to be consistent with current neutrino data.

    hep-phJHEP(2019)·4 citations
15. 15*

    Radiative type-I seesaw neutrino masses

    Carolina Arbeláez🇨🇱 · A. E. Cárcamo Hernández🇨🇱 · Ricardo Cepedello🇪🇸 · Martin Hirsch🇪🇸 · Sergey Kovalenko🇨🇱

    We discuss a radiative type-I seesaw. In these models, the radiative generation of Dirac neutrino masses allows to explain the smallness of the observed neutrino mass scale for rather light right-handed neutrino masses in a type-I seesaw. We first present the general idea in a model independent way. This allows us to estimate the typical scale of right-handed neutrino mass as a function of the number of loops. We then present two example models, one at one-loop and another one at two-loop, in which we discuss neutrino masses and lepton flavour violating constraints in more detail. For the two-loop example, right-handed neutrino masses must lie below 100 GeV, thus making this class of models testable in heavy neutral lepton searches.

    hep-phPRD(2019)·12 citations
16. 16*

    Baseline predictions of elliptic flow and fluctuations at the RHIC Beam Energy Scan using response coefficients

    S. Rao🇺🇸 · M. Sievert🇺🇸 · J. Noronha-Hostler🇺🇸

    Currently the RHIC Beam Energy Scan is exploring a new region of the Quantum Chromodynamic phase diagram at large baryon densities that approaches nuclear astrophysics regimes. This provides an opportunity to study relativistic hydrodynamics in a regime where the net conserved charges of baryon number, strangeness, and electric charge play a role, which will significantly change the theoretical approach to simulating the baryon-dense Quark-Gluon Plasma. Here we detail many of the important changes needed to adapt both initial conditions and the medium to baryon-rich matter. Then, we make baseline predictions for the elliptical flow and fluctuations based on extrapolating the physics at LHC and top RHIC energies to support future analyses of where and how the new baryon-dense physics causes these extrapolations to break down. First we compare eccentricities across beam energies, exploring their underlying assumptions; we find the the extrapolated initial state is predicted to be nearly identical to that at AuAu $\sqrt{s_{NN}}=200$ GeV. Then the final flow harmonic predictions are based on linear+cubic response. We discuss preliminary STAR results in order to determine the implications that they have for linear+cubic response coefficients at the lowest beam energy of AuAu $\sqrt{s_{NN}}=7$ GeV.

    ↳ nucl-thhep-exhep-phPRC(2021)·43 citations
17. 17*

    Parametrizing the Detector Response with Neural Networks

    Sanha Cheong🇺🇸 · Aviv Cukierman🇺🇸 · Benjamin Nachman🇺🇸 · Murtaza Safdari🇺🇸 · Ariel Schwartzman🇺🇸

    In high energy physics, characterizing the response of a detector to radiation is one of the most important and basic experimental tasks. In many cases, this task is accomplished by parameterizing summary statistics of the full detector response probability density. The parameterized detector response can then be used for calibration as well as for directly improving physics analysis sensitivity. This paper discusses how to parameterize summary statistics of the detector response using neural networks. In particular, neural networks are powerful tools for incorporating multidimensional data and the loss function used during training determines which summary statistic is learned. One common summary statistic that has not been combined with deep learning (as far as the authors are aware) is the mode. A neural network-based approach to mode learning is proposed and empirically demonstrated in the context of high energy jet calibrations. Altogether, the neural network-based toolkit for detector response parameterization can enhance the utility of data collected at high energy physics experiments and beyond.

    ↳ physics.data-anhep-exhep-phJINST(2020)·23 citations
18. 18*

    Constraints on active and sterile neutrinos in an interacting dark energy cosmology

    Lu Feng🇨🇳 · Dong-Ze He🇨🇳 · Hai-Li Li🇨🇳 · Jing-Fei Zhang🇨🇳 · Xin Zhang🇨🇳

    We investigate the impacts of dark energy on constraining massive (active/sterile) neutrinos in interacting dark energy (IDE) models by using the current observations. We employ two typical IDE models, the interacting $w$ cold dark matter (I$w$CDM) model and the interacting holographic dark energy (IHDE) model, to make an analysis. To avoid large-scale instability, we use the parameterized post-Friedmann approach to calculate the cosmological perturbations in the IDE models. The cosmological observational data used in this work include the Planck cosmic microwave background (CMB) anisotropies data, the baryon acoustic oscillation data, the type Ia supernovae data, the direct measurement of the Hubble constant, the weak lensing data, the redshift-space distortion data, and the CMB lensing data. We find that the dark energy properties could influence the constraint limits of active neutrino mass and sterile neutrino parameters in the IDE models. We also find that the dark energy properties could influence the constraints on the coupling strength parameter $\beta$, and a positive coupling constant, $\beta >0$, can be detected at the $2.5\sigma$ statistical significance for the IHDE+${\nu }_s$ model by using the all-data combination. In addition, we also discuss the "Hubble tension" issue in these scenarios. We find that the $H_0$ tension can be effectively relieved by considering massive sterile neutrinos, and in particular in the IHDE+${\nu }_s$ model the $H_0$ tension can be reduced to be at the $1.28\sigma$ level.

    ↳ astro-ph.COgr-qchep-phSCPMA(2020)·64 citations
19. 19*

    Lepton anomalous magnetic moments in Lattice QCD+QED

    D. Giusti🇮🇹 · S. Simula🇮🇹

    We present a lattice calculation of the Hadronic Vacuum Polarization (HVP) contribution to the anomalous magnetic moments of the electron, $a_e^{\mathrm{HVP}}$, the muon, $a_{\mu }^{\mathrm{HVP}}$, and the tau, $a_{\tau }^{\mathrm{HVP}}$, including both the isospin-symmetric QCD term and the leading-order strong and electromagnetic isospin-breaking corrections. Moreover, the contribution to $a_{\mu }^{\mathrm{HVP}}$ not covered by the MUonE experimen, $a_{MUonE}^{\mathrm{HVP}}$, is provided. We get $a_e^{\mathrm{HVP}}=185.8(4.2)\cdot 10^{-14}$, $a_{\mu }^{\mathrm{HVP}}=692.1(16.3)\cdot 10^{-10}$, $a_{\tau }^{\mathrm{HVP}}=335.9(6.9)\cdot 10^{-8}$ and $a_{MUonE}^{\mathrm{HVP}}=91.6(2.0)\cdot 10^{-10}$. Our results are obtained in the quenched-QED approximation using the QCD gauge configurations generated by the European (now Extended) Twisted Mass Collaboration (ETMC) with $N_f=2+1+1$ dynamical quarks, at three values of the lattice spacing varying from $0.089$ to $0.062$ fm, at several values of the lattice spatial size ($L\simeq 1.8÷3.5$ fm) and with pion masses in the range between $\simeq 220$ and $\simeq 490$ MeV.

    ↳ hep-lathep-exhep-phPoS(2019)·99 citations
20. 20*

    Spontaneously Breaking Non-Abelian Gauge Symmetry in Non-Hermitian Field Theories

    Jean Alexandre🇬🇧 · John Ellis🇬🇧 · Peter Millington🇬🇧 · Dries Seynaeve🇬🇧

    We generalise our previous formulation of gauge-invariant PT-symmetric field theories to include models with non-Abelian symmetries and discuss the extension to such models of the Englert-Brout-Higgs-Kibble mechanism for generating masses for vector bosons. As in the Abelian case, the non-Abelian gauge fields are coupled to non-conserved currents. We present a consistent scheme for gauge fixing, demonstrating Becchi-Rouet-Stora-Tyutin invariance, and show that the particle spectrum and interactions are gauge invariant. We exhibit the masses that gauge bosons in the simplest two-doublet SU(2)xU(1) model acquire when certain scalar fields develop vacuum expectation values: they and scalar masses depend quartically on the non-Hermitian mass parameter mu. The bosonic mass spectrum differs substantially from that in a Hermitian two-doublet model. This non-Hermitian extension of the Standard Model opens a new direction for particle model building, with distinctive predictions to be explored further.

    ↳ hep-thhep-phPRD(2020)·41 citations
21. 21*

    Anomalous Currents and Constitutive Relations of a Chiral Hadronic Superfluid

    Juan L. Mañes🇪🇸 · Eugenio Megias🇪🇸 · Manuel Valle🇪🇸 · Miguel A. Vazquez-Mozo🇪🇸

    The anomalous currents of two-flavor chiral nuclear matter in the presence of chiral imbalance are computed, using recently developed methods exploiting generalized transgression, which facilitates the evaluation of both the equilibrium partition function and the covariant currents. The constitutive relations for both the broken and unbroken phase of the theory are studied and the out-of-equilibrium nondissipative transport coefficients determined. In the superfluid phase, the vector covariant currents exhibit nondissipative chiral electric, magnetic, and vortical effects, the latter governed by chiral imbalance.

    ↳ hep-thcond-mat.str-elhep-phJHEP(2019)·14 citations
22. 22*

    Large-Volume Centimeter-Wave Cavities for Axion Searches

    Chao-Lin Kuo🇺🇸

    The scan rate of an axion haloscope is proportional to the square of the cavity volume. In this paper, a new class of thin-shell cavities are proposed to search for axionic dark matter. These cavities feature active volume much larger (>20X) than that of a conventional cylindrical haloscope, comparable quality factor Q, and a similar frequency tuning range. Full 3D numerical finite-element analyses have been used to show that the TM_010 eigenmodes are singly polarized throughout the volume of the cavity and can facilitate axion-photon conversion in uniform magnetic field produced by a superconducting solenoid. To mitigate spurious mode crowding and volume loss due to localization, a pre-amplification binary summing network will be used for coupling. Because of the favorable frequency-scaling, the new cavities are most suitable for centimeter-wavelength (~ 10-100 GHz), corresponding to the promising post-inflation axion production window. In this frequency range, the tight machining tolerances required for high-Q thin-shell cavities are achievable with standard machining techniques for near-infrared mirrors.

    ↳ physics.ins-detastro-ph.COhep-exhep-phJCAP(2020)·13 citations
23. 23*

    Binary Neutron Star Mergers with Missing Electromagnetic Counterparts as Manifestations of Mirror World

    Revaz Beradze🇬🇪 · Merab Gogberashvili🇬🇪 · Alexander S. Sakharov🇺🇸

    We suggest that the major fraction of binary mergers, which might provide gravitational wave signal detectable by LIGO/Virgo, emerged from the hidden mirror sector. Mirror particles do not interact with an ordinary observer except gravitationally, which is the reason why no electromagnetic signals accompanying gravitational waves from mergers with components composed of mirror matter are expected. Therefore, if the dark matter budget of the universe is mostly contributed by the mirror particles, we predict that only about one binary neutron star (neutron star - black hole) merger out of ten, observable by LIGO/Virgo, in particular at favorable conditions relative to the line of sight, could be accompanied by prompt gamma ray burst and other electromagnetic signals suitable for follow up observations. It seems the list of candidate events recorded by LIGO/Virgo during third observational run supports our predictions.

    ↳ astro-ph.HEgr-qchep-phPLB(2020)·17 citations
24. 24*

    The Odderon in QCD with running coupling

    Jochen Bartels🇩🇪 · Carlos Contreras🇨🇱 · Gian Paolo Vacca🇮🇹

    Starting from the leading Odderon solution of the three gluon system in perturbative QCD we introduce, as a first step towards the transition to the nonperturbative region, an infrared cutoff and use the running QCD coupling constant. In our numerical analysis we find that the fixed cut solution with intercept one persists, hinting at a physical Odderon with intercept one and a small t-slope.

    ↳ hep-thhep-phJHEP(2020)·13 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.