Mon·Nov 8, 2021Monday·November 8, 2021

1. 01*

   Comparison of SUSY spectra generators for natural SUSY and string landscape predictions

   Howard Baer🇺🇸 · Vernon Barger🇺🇸 · Dakotah Martinez🇺🇸

   Models of natural supersymmetry give rise to a weak scale m_{weak}~m_{W,Z,h}~ 100 GeV without any (implausible) finetuning of independent contributions to the weak scale. These models, which exhibit radiatively driven naturalness (RNS), are expected to arise from statistical analysis of the string landscape wherein large soft terms are favored, but subject to a not-too-large value of the derived weak scale in each pocket universe of the greater multiverse. The string landscape picture then predicts, using the Isajet SUSY spectra generator Isasugra, a statistical peak at m_h~ 125 GeV with sparticles generally beyond current LHC search limits. In this paper, we investigate how well these conclusions hold up using other popular spectra generators: SOFTSUSY, SPHENO and SUSPECT (SSS). We built a computer code DEW4SLHA which operates on SUSY Les Houches Accord files to calculate the associated electroweak naturalness measure \Delta_{EW}. The SSS generators tend to yield a Higgs mass peak ~125-127 GeV with a superparticle mass spectra rather similar to that generated by Isasugra. In an Appendix, we include loop corrections to \Delta_{EW} in a more standard notation.

   hep-phEPJC(2022)·26 citations
2. 02*

   An exceptionally light axion: Strong CP and Dark Matter

   Pablo Quilez🇩🇪 · Luca Di Luzio🇩🇪 · Belen Gavela🇪🇸 · Andreas Ringwald🇩🇪

   We explore whether the axion which solves the strong CP problem can naturally be much lighter than the canonical QCD axion. The $Z_{\mathcal{N}}$ symmetry proposed by Hook, with $\mathcal{N}$ mirror and degenerate worlds coexisting in Nature and linked by the axion field, is considered and the associated phenomenology is studied in detail. On a second step, we show that dark matter can be accounted for by this extremely light axion. This includes the first proposal of a "fuzzy dark matter" QCD axion. A novel misalignment mechanism occurs -- trapped misalignment -- due to the peculiar temperature dependence of the $Z_{\mathcal{N}}$ axion potential, which in some cases can also dynamically source the recently proposed kinetic misalignment mechanism. The resulting universal enhancement of all axion interactions relative to those of the canonical QCD axion has a strong impact on the prospects of ALP experiments such as ALPS II, IAXO and many others. For instance, even Phase I of Casper Electric could discover this axion.

   hep-phastro-ph.COPoS(2022)·2 citations
3. 03*

   Chromomagnetic dipole moment of the top quark in the Bestest Little Higgs model

   J. I. Aranda🇲🇽 · T. Cisneros-Pérez🇲🇽 · E. Cruz-Albaro🇲🇽 · J. Montaño-Domínguez🇲🇽 · F. Ramírez-Zavaleta🇲🇽

   We calculate the chromomagnetic dipole moment of the top quark, ${\hat{\mu }}_t$, in the context of the Bestest Little Higgs model. This extension of the Standard Model aims to solve the hierarchy problem without fine tuning, by introducing one-loop corrections to the Higgs boson mass through heavy top quark partners and heavy gauge bosons. We found that the largest resulting value for the chromomagnetic is ${\hat{\mu }}_t\sim 10^{-5}$ and the lowest is around $10^{-6}$, mainly due to the Higgs boson of the Standard Model, which couples to both the top quark of the Standard Model and its heavy partners. Also, we present a wide variety of new Feynman rules involved in our calculation.

   hep-ph5 citations
4. 04*

   Confinement in Two-Dimensional QCD and the Infinitely Long Pion

   Colin M. Weller🇺🇸 · Gerald A. Miller🇺🇸

   Three current models of QCD in (1+1) dimensions are examined and extended in light-front coordinates. A pion of high momentum is found to have an infinite extent along its direction of motion.

   hep-phnucl-thPRD(2022)·23 citations
5. 05*

   A study on the exotic state $P_c(4312),P_c(4440),P_c(4457)$ in $pp$ collisions at $\sqrt{s}=7$, 13 TeV

   Chun-hui Chen🇺🇸 · Yi-Long Xie🇨🇳 · Hong-ge Xu🇨🇳 · Zhen Zhang🇺🇸 · Dai-Mei Zhou🇨🇳 · Zhi-Lei She🇨🇳 · Gang Chen🇨🇳

   The exotic resonant state $P_c^{\pm }(4312)$, $P_c^{\pm }(4440)$, and $P_c^{\pm }(4457)$ are studied by using the dynamically constrained phase space coalescence DCPC model and PACIAE model in $pp$ collisions at $\sqrt{s}=7$, 13TeV, respectively. We consider exotic state $P_c^{\pm }(4312)$, $P_c^{\pm }(4440)$ and $P_c^{\pm }(4457)$ to be three kinds of possible structures, i.e. pentaquark state, the nucleus-like state, and the molecular state based on $P_c^{\pm }\to J/\psi p(\bar{p})$ bound state. The yield, the transverse momentum distribution and the rapidity distribution of $P_c$ with three different structures are all predicted. The results indicated that the yield is on the order of $10^{-6}$, which might provide reference for experimental research.

   hep-phPRD(2022)·24 citations
6. 06*

   Collective effects in neutrino scattering on solid and liquid targets

   Georgy Donchenko🇷🇺 · Konstantin Kouzakov🇷🇺 · Alexander Studenikin🇷🇺

   Neutrino scattering on liquid and solid targets at low energy transfer can serve both as a tool for searching the physics beyond the Standard Model, for example, such as neutrino electromagnetic interactions, and as a test of the Standard Model at low-energy scale. At the same time, the theoretical apparatus for low-energy elastic neutrino scattering on electrons and nuclei bound in liquids and solids must take into account collective effects in the electron and nuclear subsystems of the target. We develop such an apparatus based on the formalism of the dynamic structure factor. A numerical illustration of the role of the collective effects is provided for the case of a superfluid He-4 target.

   hep-phnucl-thPoS(2022)·0 citations
7. 07*

   Neutrino magnetic moments in low-energy neutrino scattering on condensed matter systems

   Georgy Donchenko🇷🇺 · Konstantin Kouzakov🇷🇺 · Alexander Studenikin🇷🇺

   The cross sections of elastic neutrino scattering on electrons and nuclei in the regime of low-energy transfer are known to be very sensitive to neutrino electromagnetic properties. In particular, the magnetic moment of the neutrino can be effectively searched using liquid or solid detectors with a very low energy threshold. We present the formalism that incorporates the neutrino magnetic moment contribution in the theoretical treatment of the low-energy elastic neutrino scattering on a condensed-matter target. The concept of the dynamic structure factor is employed to describe the collective effects in the target. The differential cross section for tritium antineutrino scattering on the superfluid ${}^4$He is calculated numerically. We find that the neutrino magnetic moment of the order of $10^{-11}{\mu }_B$ strongly affects the cross section. Our results can be used in the search of neutrino magnetic moments in future low-energy neutrino scattering experiments with liquid or solid targets.

   hep-phhep-thJ.Phys.Conf.Ser.(2021)·1 citation
8. 08*

   Sterile neutrinos with neutrino telescopes

   Carlos A. Argüelles🇺🇸 · Jordi Salvado🇪🇸

   Searches for light sterile neutrinos are motivated by the unexpected observation of electron neutrino appearance in short-baseline experiments, such as the Liquid Scintillator Neutrino Detector (LSND) and the Mini Booster Neutrino Experiment (MiniBooNE). In light of these unexpected results, a campaign using natural and anthropogenic sources to find light -- mass-squared-difference around 1 eV${}^2$ -- sterile neutrinos is underway. Among the natural sources, atmospheric neutrinos provide a unique gateway to search for sterile neutrinos due to the broad range of baseline-to-energy ratios, $L/E$, and the presence of significant matter effects. Since the atmospheric neutrino flux rapidly falls with energy, studying its highest energy component requires gigaton-scale neutrino detectors. These detectors -- often known as neutrino telescopes since they are designed to observe tiny astrophysical neutrino fluxes -- have performed searches for light sterile neutrinos and have found no significant signal to date. This brief review summarizes the current status of searches for light sterile neutrinos with neutrino telescopes deployed in solid and liquid water.

   hep-phUniverse(2021)·3 citations
9. 09*

   Eikonal Dressed Gluon Exponentiation to study power corrections to Thrust, $C$-parameter, and Angularity

   Neelima Agarwal · Ayan Mukhopadhyay🇮🇳 · Sourav Pal🇮🇳 · Anurag Tripathi🇮🇳

   Dressed Gluon Exponentiation is a well known method to study power corrections. We present here its eikonalized version -- Eikonal Dressed Gluon Exponentiation (EDGE) \cite{Agarwal:2020uxi} to determine the dominant power corrections to shape variables such as Thrust, $C$- parameter, and Angularity. Our method remarkably simplifies the calculations.

   hep-phSciPost Phys.Proc.(2022)·0 citations
10. 10*

    Building a realistic neutron star from holography

    Nicolas Kovensky🇫🇷 · Aaron Poole🇬🇧 · Andreas Schmitt🇬🇧

    We employ the recently improved description of dense baryonic matter within the Witten-Sakai-Sugimoto model to construct neutron stars. In contrast to previous holographic approaches, the presence of an isospin asymmetry allows us to implement beta equilibrium and electric charge neutrality. As a consequence, we are able to model the crust of the star within the same formalism and compute the location of the crust-core transition dynamically. After showing that a simple pointlike approximation for the baryons fails to satisfy astrophysical constraints, we demonstrate that our improved description does account for neutron stars that meet the current experimental constraints for mass, radius, and tidal deformability. However, we also point out tensions in the parameter fit and large-$N_c$ artifacts and discuss how to potentially resolve them in the future.

    hep-phastro-ph.HEhep-thnucl-thPRD(2022)·64 citations
11. 11*

    Transverse momentum broadening in real-time lattice simulations of the glasma

    Andreas Ipp🇦🇹 · David I. Müller🇦🇹 · Daniel Schuh🇦🇹

    The study of jets in heavy-ion collisions provides important information about the interaction of partons with the medium that they traverse. The seeds of jets are highly energetic partons, which are produced from hard scatterings during the collision event. As such, they are affected by all different stages of the medium's time evolution, including the glasma, which is the pre-equilibrium precursor state of the quark-gluon plasma. Here we report on our numerical lattice simulations of partons traversing the boost-invariant, non-perturbative glasma as created at the early stages of collisions at RHIC and LHC. We find that partons quickly accumulate transverse momentum up to the saturation momentum during the glasma stage. Furthermore, we observe an interesting anisotropy in transverse momentum broadening of partons with larger broadening in the rapidity than in the azimuthal direction. Its origin can be related to correlations among the longitudinal color-electric and color-magnetic flux tubes in the initial state of the glasma. We compare these observations to the semi-analytic results obtained by a weak-field approximation, where we also find such an anisotropy in a parton's transverse momentum broadening.

    hep-phhep-latnucl-thPoS(2022)·0 citations
12. 12*

    Mass-derivative relations for leptogenesis

    Tomáš Blažek🇸🇰 · Peter Maták🇸🇰

    In this work, a diagrammatic representation of thermal mass effects is derived from the $S$-matrix unitarity both in the classical and quantum Boltzmann equations. Within the example of the seesaw type-I leptogenesis, we discuss the connection of the Higgs thermal mass and the cancelations of infrared divergences in zero- and finite-temperature calculations of the right-handed neutrino decay and scattering processes.

    hep-phEPJC(2022)·13 citations
13. 13*

    Multiplicative-Accumulative matching of NLO calculations with parton showers

    Paolo Nason🇮🇹 · Gavin P. Salam🇬🇧

    We propose a new approach for combining next-to-leading order (NLO) and parton shower (PS) calculations so as to obtain three core features: (a) applicability to general showers, as with the MCatNLO and POWHEG methods; (b) positive-weight events, as with the KrkNLO and POWHEG methods; and (c) all showering attributed to the parton shower code, as with the MCatNLO and KrkNLO methods. This is achieved by using multiplicative matching in phase space regions where the shower overestimates the matrix element and accumulative (additive) matching in regions where the shower underestimates the matrix element, an approach that can be viewed as a combination of the MCatNLO and KrkNLO methods.

    hep-phJHEP(2022)·26 citations
14. 14*

    Toward twist-2 $T$-odd transverse-momentum-dependent gluon distributions: the $f$-type linearity function

    Alessandro Bacchetta🇮🇹 · Francesco Giovanni Celiberto🇮🇹 · Marco Radici🇮🇹

    We present preliminary results on the leading-twist transverse-momentum-dependent (TMD) gluon linearity function, which is directly connected to nucleon transverse-spin asymmetries originating from the density of linearly-polarized gluons. The function is calculated in a spectator-model framework for the parent proton and for the $f$-type gauge-link structure. Our work represents a further step toward the definition of a complete set of gluon TMD distributions at twist-2 that can be used to access the gluon dynamics inside nucleons and nuclei at new-generation colliders.

    hep-phPoS(2022)·46 citations
15. 15*

    Relativistic first-order spin hydrodynamics via the Chapman-Enskog expansion

    Jin Hu🇨🇳

    In this paper, we present a detailed derivation of relativistic first-order spin hydrodynamics using the Chapman-Enskog method to linearize the nonlocal collision term for massive fermions proposed in \cite{Weickgenannt:2021cuo}, which well describes spin-orbit coupling in the collision process and is relevant for the research on local spin polarization. Based on this collisional term, we provide a formal discussion about first-order spin hydrodynamics and determine the motion equations of fluid variables and nonequilibrium corrections to the energy-momentum and spin tensors. The results indicate that the motion equations show no differences compared to spinless first-order hydrodynamics and the energy-momentum tensor receives no corrections from spin as far as first-order theory is concerned, which calls for the construction of second-order theory of fluids naturally incorporating the effect of spin-orbit coupling.

    hep-phPRD(2022)·69 citations
16. 16*

    Application of TMD parton showers obtained with the Parton Branching approach to Drell Yan + jets production

    Armando Bermudez Martinez🇩🇪 · Luis I. Estevez Banos🇩🇪 · Hannes Jung🇩🇪 · Jindrich Lidrych🇩🇪 · Mikel Mendizabal🇩🇪 · Sara Taheri Monfared🇩🇪 · Qun Wang🇩🇪 · Heng Yang🇨🇳

    Calculations of Drell-Yan (DY) production at next-to-leading (NLO) order have been combined with Transverse Momentum Dependent (TMD) distributions obtained with the Parton Branching (PB). The predictions show a remarkable agreement with DY measurement from E605 experiment, consistent with previous results we obtained for R209, PHENIX, CMS and ATLAS experiments. We also present predictions for Z+jet measurements showing the importance of TMD parton shower contributions to the jet multiplicity. We show that PB-TMD parton density and the corresponding PB-TMD parton shower can be combined with leading-order (LO) matrix element using the newly developed TMD merging algorithm to obtain a very good description of measurements over a wide kinematic range.

    hep-phPoS(2022)·2 citations
17. 17*

    Zero-jettiness resummation for top-quark pair production at the LHC

    Simone Alioli🇮🇹 · Alessandro Broggio🇮🇹 · Matthew A. Lim🇮🇹

    We study the resummation of the $0$-jettiness resolution variable ${\mathcal{T}}_0$ for the top-quark pair production process in hadronic collisions. Starting from an effective theory framework we derive a factorisation formula for this observable which allows its resummation at any logarithmic order in the ${\mathcal{T}}_0\to 0$ limit. We then calculate the $\mathcal{O}({\alpha }_s)$ corrections to the soft function matrices and, by employing renormalisation group equation methods, we obtain the ingredients for the resummation formula up to next-to-next-to-leading logarithmic ($\mathrm{NNLL}$) accuracy. We study the impact of these corrections to the $0$-jettiness distribution by comparing predictions at different accuracy orders: $\mathrm{NLL}$, ${\mathrm{NLL}}^{\prime }$, $\mathrm{NNLL}$ and approximate ${\mathrm{NNLL}}^{\prime }$ (${\mathrm{NNLL}}_{\text{a}}^{\prime }$). We match these results to the corresponding fixed order calculations both at leading order and next-to-leading order for the $t\bar{t}+$jet production process, obtaining the most accurate prediction of the $0$-jettiness distribution for the top-quark pair production process at ${\mathrm{NNLL}}_{\text{a}}^{\prime }+\mathrm{NLO}$ accuracy.

    hep-phhep-exJHEP(2022)·33 citations
18. 18*

    Gravitino constraints on supergravity inflation

    Shinsuke Kawai🇰🇷 · Nobuchika Okada🇺🇸

    Supergravity embedding of the Standard Model of particle physics provides phenomenologically well-motivated and observationally viable inflationary scenarios. We investigate a class of inflationary models based on the superconformal framework of supergravity and discuss constraints from the reheating temperature, with the particular focus on the gravitino problem inherent in these scenarios. We point out that a large part of the parameter space within the latest BICEP/Keck 95\% confidence contour may have been excluded by the gravitino constraints, depending on the mass scale of the inflaton. Precision measurements of the scalar spectral index by a future mission may rule out some of these scenarios conclusively.

    hep-phastro-ph.COhep-exhep-thPRD(2022)·10 citations
19. 19*

    Phenomenology of CP-even ALP

    Kodai Sakurai🇯🇵 · Wen Yin🇯🇵

    Axion or axion-like particle (ALP) has been usually considered as a CP-odd Nambu-Goldstone boson (NGB) from the spontaneous breakdown of a global U(1) symmetry. In this paper, we point out that the NGB behaves as a CP-even particle coupled to the SM particles in a large class of simple (or perhaps the simplest) renormalizable models. We provide a first study of the collider phenomenology and cosmology of the CP-even ALP. In a natural parameter region, the CP-even ALP can be produced from the Higgs boson decay in colliders. When the mass is not very light, the signals will be Higgs exotic decays, Higgs decay to displaced vertex $\times 2$, Higgs decay to displaced vertex + missing energy. The signal can be discriminated from other models, e.g. hidden photon, by measuring the decay length and the decay products of the light new particle. In addition, when $m_a\lesssim$MeV, in which case the Higgs boson invisible decay may be probed in the colliders, the CP-even ALP is a nice Dark matter (DM) candidate. The DM can be probed by 21cm line measurement, the future measurement of the Milky way mass halo function in the Vera Rubin Observatory, as well as X- or $\gamma$-ray observations. The DM production mechanisms are discussed.

    hep-phastro-ph.COhep-exJHEP(2022)·22 citations
20. 20*

    Which Metric on the Space of Collider Events?

    Tianji Cai🇺🇸 · Junyi Cheng🇺🇸 · Katy Craig🇺🇸 · Nathaniel Craig🇺🇸

    Which is the best metric for the space of collider events? Motivated by the success of the Energy Mover's Distance in characterizing collider events, we explore the larger space of unbalanced optimal transport distances, of which the Energy Mover's Distance is a particular case. Geometric and computational considerations favor an unbalanced optimal transport distance known as the Hellinger-Kantorovich distance, which possesses a Riemannian structure that lends itself to efficient linearization. We develop the particle linearized unbalanced Optimal Transport (pluOT) framework for collider events based on the linearized Hellinger-Kantorovich distance and demonstrate its efficacy in boosted jet tagging. This provides a flexible and computationally efficient optimal transport framework ideally suited for collider physics applications.

    hep-phhep-exPRD(2022)·32 citations
21. 21*

    QCD Axion Kinetic Misalignment without Prejudice

    Basabendu Barman🇨🇴 · Nicolás Bernal🇨🇴 · Nicklas Ramberg🇩🇪 · Luca Visinelli🇨🇳

    The axion field, the angular direction of the complex scalar field associated with the spontaneous symmetry breaking of the Peccei-Quinn (PQ) symmetry, could have originated with initial non-zero velocity. The presence of a non-zero angular velocity resulting from additional terms in the potential that explicitly break the PQ symmetry has important phenomenological consequences such as a modification of the axion mass with respect to the conventional PQ framework or an explanation for the observed matter-antimatter asymmetry. We elaborate further on the consequences of the "kinetic misalignment" mechanism, assuming that axions form the entirety of the dark matter abundance. The kinetic misalignment mechanism possesses a {\it weak} limit in which the axion field starts to oscillate at the same temperature as in the conventional PQ framework, and a {\it strong} limit corresponding to large initial velocities which effectively delay the onset of oscillations. Following a UV-agnostic approach, we show how this scenario impacts the formation of axion miniclusters, and we sketch the details of these substructures along with potential detecting signatures.

    hep-phastro-ph.COUniverse(2022)·36 citations
22. 22*

    Cerium ruthenium low-energy antineutrino measurements for safeguarding military naval reactors

    Bernadette K. Cogswell🇺🇸 · Patrick Huber🇺🇸

    The recent agreement to transfer nuclear submarine reactors and technology from two nuclear-weapon states to a non-nuclear-weapon state (AUKUS deal) highlights an unsolved problem in international safeguards: how to safeguard naval reactor fuel while it is on-board an operational nuclear submarine. Proposals to extend existing safeguards technologies and practices are complicated by the need for civilian international inspectors to gain access to the interior of the submarine and the reactor compartment, which raises national security concerns. In this paper we show that implementing safeguards on submarine propulsion reactors using a low-energy antineutrino reactor-off method, between submarine patrols, can by-pass the need for on-board access all together. We find that, using inverse beta decay (IBD), detectors can achieve a timely and high level of assurance that a submarine's nuclear core has not been diverted (mass of around 100 kg) nor its enrichment level changed (mass of around 10 tons).

    hep-phhep-exnucl-exPRL(2022)·5 citations
23. 23*

    Domain Collisions

    Yago Bea🇫🇮 · Jorge Casalderrey-Solana🇪🇸 · Thanasis Giannakopoulos🇵🇹 · David Mateos🇪🇸 · Mikel Sanchez-Garitaonandia🇪🇸 · Miguel Zilhão🇵🇹

    We use holography to study collisions of phase domains formed in a four-dimensional, strongly-coupled gauge theory with a first-order, thermal phase transition. We find three qualitatively different dynamical regimes depending on the collision velocity. For low velocities the domains slow down before the collision and subsequently merge and relax to equilibrium. For intermediate velocities no slow down is present before the merger. For high enough velocities the domains can collide and break apart several times before they finally merge. These features leave an imprint on the time evolution of the entropy of the system, which we compute from the area of the dual horizon on the gravity side.

    ↳ hep-thgr-qchep-phJHEP(2022)·20 citations
24. 24*

    The Gluon Exchange Model in proton-nucleus collisions

    Marek Jeżabek🇵🇱 · Andrzej Rybicki🇵🇱

    We apply our recently formulated Gluon Exchange Model (GEM) to baryon production in proton-nucleus reactions involving N>1 proton-nucleon collisions. We propose a description scheme for the process of soft color octet (gluon) exchange, based on the assumption that probabilities to form an effective diquark are equal for all allowed pairs of quarks. The latter effective diquark can form either from two valence, one valence and one sea, or from two sea quarks. Consequently we calculate the probabilities for different color configurations involving diquarks of valence-valence, valence-sea and sea-sea type. These probabilities appear to depend on the number of exchanged gluons, which results in increasing baryon stopping as a function of the number of proton-nucleon collisions in the nucleus. As such, the nuclear stopping power appears to be governed by the emergence of new color configurations as a function of N rather than by the energy loss of the original valence diquark. The advantage of our approach lies in its high predictive power which makes it verifiable by the new, precise data on proton and neutron production from the CERN SPS. The latter verification, and a set of predictions for the N-dependence of the baryon stopping process, are included in the letter.

    ↳ nucl-thhep-phActa Phys.Polon.B(2022)·1 citation
25. 25*

    Thermal QCD phase transition and its scaling window from Wilson twisted mass fermions

    A.Yu. Kotov🇩🇪 · M.P. Lombardo🇮🇹 · A. Trunin🇷🇺

    We investigate the thermal QCD phase transition and its scaling properties on the lattice. The simulations are performed with $N_f=2+1+1$ Wilson twisted mass fermions at pion masses from physical up to heavy quark regime. We introduce a novel chiral order parameter, which is free from linear mass contributions and turns out to be very useful for the study of scaling behaviour. Our results are compatible with $O(4)$ universal scaling for the physical pion mass and the temperature range $[120:300]$ MeV. Violations to scaling at larger masses and other possible scenarios, including mean field behaviour and $Z(2)$ scaling scenario are also discussed. We provide an estimation for the critical temperature in the chiral limit $T_0$.

    ↳ hep-lathep-phhep-thPoS(2022)·2 citations
26. 26*

    Results and future plans of the MoEDAL experiment

    Vasiliki A. Mitsou (for the MoEDAL Collaboration)🇪🇸

    The unprecedented collision energy of the LHC has opened up a new discovery frontier. Unfortunately, signs of new physics have yet to be seen. The LHC's first dedicated search experiment, MoEDAL, started data taking for LHC Run 2. MoEDAL is designed to search highly ionising particle avatars of new physics using pp and heavy-ion collisions at the LHC. The planned upgrade for MoEDAL at Run 3 - the MAPP detector (MoEDAL Apparatus for Penetrating Particles) - will extend MoEDAL's physics reach to include feebly interacting and long-lived messengers of physics beyond the Standard Model. This will allow us to explore a number of models of new physics, including dark-sector models, in a complementary way to that of conventional LHC collider detectors. This article focuses on recent results and plans for the LHC Run 3.

    ↳ hep-exhep-phphysics.ins-detPoS(2022)·7 citations
27. 27*

    Standard Model soft QCD at ATLAS and CMS

    Davide Caforio🇩🇪

    Recent results in soft QCD at LHC by the ATLAS, CMS and TOTEM Collaborations are presented. Special focus is reserved to studies in diffractive and forward physics, and to the underlying event, with comparison with previous results and highlighting novel techniques.

    ↳ hep-exhep-ph0 citations
28. 28*

    Coherent scattering of low mass dark matter from optically trapped sensors

    Gadi Afek🇺🇸 · Daniel Carney🇺🇸 · David C. Moore🇺🇸

    We propose a search for low mass dark matter particles through momentum recoils caused by their scattering from trapped, nm-scale objects. Our projections show that even with a modest array of fg-mass sensors, parameter-space beyond the reach of existing experiments can be explored. The case of smaller, ag-mass sensors is also analyzed - where dark matter can coherently scatter from the entire sensor - enabling a large enhancement in the scattering cross-section relative to interactions with single nuclei. Large arrays of such sensors have the potential to explore new parameter space down to dark matter masses as low as 10 keV. If recoils from dark matter are detected by such sensors, their inherent directional sensitivity would allow an unambiguous identification of a dark matter signal.

    ↳ physics.ins-dethep-exhep-phquant-phPRL(2022)·70 citations
29. 29*

    Scale setting for $\mathcal{N}=1$ SUSY Yang-Mills at large-$N$ through volume-reduced twisted matrix model

    P. Butti🇪🇸 · M. Garcia Perez🇪🇸 · A. Gonzalez-Arroyo🇪🇸 · K. I. Ishikawa🇯🇵 · M. Okawa🇯🇵

    $\mathcal{N}=1$ SUSY Yang-Mills theory is an appealing theoretical framework that has been studied in the literature using different methods, including standard lattice simulations. Among these, the volume-reduced twisted Eguchi-Kawai model, endowed with one adjoint Majorana fermion, could play an important role in studying its large-$N$ limit via the Curci-Veneziano prescription. In this talk, we present our results on the analysis of the scale of the theory, performed via different methods based on purely gluonic observables as well as (quenched) fundamental mesons in the chiral limit. These lattice results will be used as a scale setting for the analysis of the spectrum of the theory.

    ↳ hep-lathep-phhep-thPoS(2022)·2 citations
30. 30*

    Pauli Blocking for a Relativistic Fermi Gas in Quasielastic Lepton Nucleus Scattering

    Arie Bodek🇺🇸

    The expressions for the overall effect of Pauli blocking in quasielastic (QE) lepton scattering from nuclear targets within the framework of the Relativistic Fermi Gas (RFG) given in several publications are incorrect. For example, the expressions published by Bell and Llewelyn Smith in 1972 are incorrect (probably a typographical error). The expressions for Pauli blocking presented in several subsequent publications including the paper of C.H. Llewelyn Smith in 1972 and the paper of Paschos and Yu in 2002 have the same error. Another example is a 1992 paper by Singh and Oset which has a different (probably also a typographical) error. Other papers such as the papers of Tsai in 1974 and Bosted and Mamyan in 2012 use the correct expressions. In this short preprint we review the geometrical derivation of the overall reduction of the QE cross sections due to Pauli blocking for electron and neutrino scattering for targets with equal numbers of neutrons and protons and for targets with unequal numbers of neutrons and protons and derive the correct expressions. However, we note that the effects of Pauli blocking within the framework of the RFG model are much larger than in other more realistic models of QE scattering such as ${\psi }^{\prime }$ superscaling or a spectral function approach.

    ↳ nucl-thhep-ph11 citations
31. 31*

    Dynamics of the $O(4)$ critical point in QCD

    Adrien Florio🇺🇸 · Eduardo Grossi🇺🇸 · Alexander Soloviev🇺🇸 · Derek Teaney🇺🇸

    We perform a real-time simulation of the $O(4)$ critical point of QCD, which lies in the dynamic universality class of Model G. The axial charge and the order parameter ${\varphi }_a=(\sigma ,\vec{\pi })$ exhibit a rich dynamical interplay, which reflects the qualitative differences in the hydrodynamic effective theories above and below $T_c$. From the axial charge correlators on the critical line we extract a dynamical critical exponent of $\zeta =1.47\pm 0.01(\mathrm{stat})$, which is compatible with the theoretical expectation of $\zeta =d/2$ (with $d=3$) when systematic errors are taken into account. At low temperatures, we quantitatively match the $O(4)$ simulations to the superfluid effective theory of soft pions.

    ↳ hep-lathep-phhep-thnucl-thPRD(2022)·50 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.