Mon·Jun 18, 2018Monday·June 18, 2018

1. 01*

   The presence of a critical end point in the QCD phase diagram from the net-baryon number fluctuations

   Márcio Ferreira🇵🇹 · Pedro Costa🇵🇹 · Constança Providência🇵🇹

   The net-baryon number fluctuations for three-flavor quark matter are computed within the Polyakov extended Nambu$-$Jona-Lasinio model. Two models with vanishing and nonvanishing vector interactions are considered. While the former predicts a critical end point (CEP) in the phase diagram, the latter predicts no CEP. We show that the nonmonotonic behavior of the susceptibilities in the phase diagram is still present even in the absence of a CEP. Therefore, from the nonmonotonic behavior of the susceptibilities solely, one cannot assume the existence of a CEP. We analyze other possible properties that may distinguish the two scenarios, and determine the behavior of the net-baryon number fluctuations and the velocity of sound along several isentropes, with moderate and small values. It is shown that the value of the susceptibilities ratios and the velocity of sound at two or three isentropic lines could possibly allow to distinguish both scenarios, a phase diagram with or without CEP. Smoother behaviors of these quantities may indicate the nonexistence of a CEP. We also discuss the critical behavior of the strange sector.

   hep-phPRD(2018)·21 citations
2. 02*

   Net baryon-number fluctuations in magnetized quark matter

   Márcio Ferreira🇵🇹 · Pedro Costa🇵🇹 · Constança Providência🇵🇹

   The kurtosis and skewness of net baryon-number fluctuations are studied for the magnetized phase diagram of three-flavor quark matter within the Polyakov extended Nambu$-$Jona-Lasinio model. Two models with magnetic catalysis and inverse magnetic catalysis are considered. Special attention is given to their behavior in the neighborhood of the light and strange critical end points (CEPs). Several isentropic trajectories that come close the CEPs are studied in order to analyze possible signatures of a CEP in the presence of external magnetic fields. The effect of the magnetic field on the velocity of sound, $v_s^2$, when both the light and strange CEPs are approached from the crossover region is also investigated by calculating their temperature and baryon chemical potential dependencies at fixed distances from these CEPs. Regions with large fluctuations but no CEP in nonmagnetized matter develop a CEP under the action of a strong magnetic field. Besides, the Landau quantization of the quark trajectories may result in the appearance of extra CEPs, in particular, in the strange sector for strong magnetic fields, identifiable by the net baryon-number fluctuations. Stiffer (smoother) fluctuations in the region of the CEP are characteristic of models that do not predict (do predict) the inverse magnetic catalysis at zero chemical potential. Particularly interesting is the ratio ${\chi }_B^4/{\chi }_B^2$ that has a more pronounced peak structure, indicating that it is eventually a more convenient probe for the search of a CEP. The speed of sound shows a much richer structure in magnetized quark matter and allows one to identify both chiral and deconfinement transitions.

   hep-phPRD(2018)·16 citations
3. 03*

   $\varphi$-Lagrangian, a new scalar mediator for light-by-light scattering process

   Mohamed Belfkir (FSSM)🇲🇦

   The $\varphi$ scalar boson is a new mediator proposed to describe the direct light-by-light scattering observed recently in ultra-peripheral collisions (UPCs) with ATLAS detector where two photons interact directly to gives two photons in the final state. The proposed lagrangian present a description to the forbidden process. The description presented in this paper consist the interaction terms, the coupling to the Higgs boson to generate the mass for this new resonance and the simulation using proton proton in order to observe this process in other nominal LHC collisions, since the process is observed in heavy-ions collisions.

   hep-ph0 citations
4. 04*

   Centrality dependence of kinetic freeze-out temperature and transverse flow velocity in high energy nuclear collisions

   Muhammad Waqas🇨🇳 · Fu-Hu Liu🇨🇳

   Centrality-dependent double-differential transverse momentum spectra of charged pions, kaons, and (anti)protons produced in mid-pseudorapidity interval in $\sqrt{s_{NN}}=200$ GeV gold-gold and deuteron-gold collisions with different centralities are analyzed by the blast-wave model with Boltzmann-Gibbs statistics. Meanwhile, the mentioned spectra in mid-rapidity interval in $\sqrt{s_{NN}}=2.76$ TeV lead-lead and $\sqrt{s_{NN}}=5.02$ TeV proton-lead collisions with different centralities are analyzed by the same model. The model results are approximately in agreement with the experimental data in special transverse momentum ranges. It is shown that with the increase of event centrality and energy, the kinetic freeze-out temperature of the emission source and the transverse flow velocity of the produced particles slightly increase in some cases but they do not give an obvious change in other cases. Meanwhile, the kinetic freeze-out temperature (transverse flow velocity) increases (decreases) with the increase of particle mass. The average transverse momentum and initial temperature increase with the increase of event centrality, collision energy, and particle mass. This work also confirms the maximum size dependent effect, which states that the main parameters such as the kinetic freeze-out temperature and transverse flow velocity are mainly determined by the heaviest nucleus from proton-nucleus to nucleus-nucleus collisions.

   hep-phhep-exnucl-exnucl-thIndian J.Phys.(2022)·26 citations
5. 05*

   Sterile neutrinos influence on oscillation characteristics of active neutrinos at short distances in the generalized model of neutrino mixing

   V. V. Khruschov🇷🇺 · S. V. Fomichev🇷🇺

   A phenomenological model with active and sterile neutrinos is used for calculations of neutrino oscillation characteristics at the normal mass hierarchy of active neutrinos. Taking into account the contributions of sterile neutrinos, appearance and survival probabilities for active neutrinos are calculated. Modified graphical dependencies for the probability of appearance of electron neutrinos/antineutrinos in muon neutrino/antineutrino beams as a function of the ratio of the distance to the neutrino energy and other model parameters are obtained. It is shown that in the case of a certain type mixing between active and sterile neutrinos it is possible to clarify some features of the anomalies of neutrino data at short distances. A new parametrization for a particular type mixing matrix of active and sterile neutrinos that takes into account the additional sources of CP violation is used. The comparison with the existing experimental data is performed and, with using this knowledge, the estimates of some model parameters are found. The theoretical results obtained for mixing of active and sterile neutrinos can be applied for interpretation and prediction of results of ground-based experiments on search of sterile neutrinos as well as for analyses of some astrophysical data.

   hep-phInt.J.Mod.Phys.A(2019)·8 citations
6. 06*

   $ZZ$ production at the LHC: NNLO predictions for $2\ell 2\nu$ and $4\ell$ signatures

   Stefan Kallweit🇨🇭 · Marius Wiesemann🇨🇭

   We consider QCD radiative corrections to $ZZ$ production for all experimentally relevant leptonic processes. We report on a novel computation of next-to-next-to-leading-order (NNLO) corrections to the diboson signature with two charged leptons and missing transverse energy ($\ell \ell$+$E_T^{\mathrm{miss}}$). All relevant final states are considered: $\ell \ell {\nu }_{\ell }{\nu }_{\ell }$, $\ell \ell {\nu }_{{\ell }^{\prime }}{\nu }_{{\ell }^{\prime }}$ and $\ell {\nu }_{\ell }{\ell }^{\prime }{\nu }_{{\ell }^{\prime }}$. We also study processes with four charged leptons: $\ell \ell \ell \ell$ and $\ell \ell {\ell }^{\prime }{\ell }^{\prime }$. For the first time NNLO accuracy is achieved for a process mixing two double-resonant diboson topologies ($ZZ/W^{+}{W}^{-}\to \ell \ell {\nu }_{\ell }{\nu }_{\ell }$). We find good agreement with ATLAS data at 8 TeV. NNLO corrections are large (5-20% and more), and interference effects between $ZZ$ and $W^{+}{W}^{-}$ resonances turn out to be negligible in most cases.

   hep-phhep-exPLB(2018)·69 citations
7. 07*

   Dark matter for $b\to s{\mu }^{+}{\mu }^{-}$ anomaly in a gauged $U(1{)}_X$ model

   Seungwon Baek🇰🇷 · Chaehyun Yu🇰🇷

   We propose a new physics model which has a cold dark matter candidate and can explain the $b\to s{\mu }^{+}{\mu }^{-}$ anomaly at the same time. Our model includes a scalar quark $\tilde{q}$ and a scalar lepton $\tilde{\ell }$ which are $SU(2{)}_L$-doublet as well as a Dirac fermion $N$ which is $SU(2{)}_L$-singlet. The new particles are charged under a gauged $U(1{)}_X$ group which is spontaneously broken to a discrete $Z_2$ symmetry by a dark scalar $S$. The remnant $Z_2$ symmetry stabilizes the dark matter. Box diagrams with $\tilde{q}$, $\tilde{\ell }$, and $N$ running inside the loop can generate the correct Wilson coefficients $C_9^{\mu }=-C_{10}^{\mu }$ to accommodate the $b\to s{\mu }^{+}{\mu }^{-}$ anomaly while avoiding constraints such as $B_s-{\overline{B}}_s$ mixing. The dark matter annihilation into a second generation lepton pair via $t$-channel $\tilde{\ell }$-exchanging process plays an important role in producing the current dark matter relic abundance of the universe, showing a strong interplay between the flavor and dark matter physics. We also discuss dark-gauge-interaction-dominated and Higgs-portal-dominated scenarios for dark matter physics.

   hep-phJHEP(2018)·31 citations
8. 08*

   Elastic and diffractive scattering at the LHC

   V.A. Khoze🇬🇧 · A.D. Martin🇬🇧 · M.G. Ryskin🇬🇧

   Inspired by the new TOTEM data on elastic $pp$ scattering at 13 TeV, we study the possibility to describe all the diffractive collider data (${\sigma }_{\mathrm{tot}},d{\sigma }_{\mathrm{el}}/dt$, $\rho \equiv$Re$A$/Im$A$, \sd) in a wide interval of energy (0.0625 to 13 TeV) in the framework of a two-channel eikonal model. We show that a satisfactory description can be achieved without an odd-signature (Odderon) exchange contribution. We consider the possible role of the QCD Odderon which may improve the description of $\rho$ and discuss the importance of the odd-signature term if the amplitude were to exceed the black disc limit.

   hep-phPLB(2018)·64 citations
9. 09*

   Probing the scale of non-commutativity of space

   Pulkit S. Ghoderao (IIT Bombay)🇮🇳 · Rajiv V. Gavai (TIFR, Mumbai)🇮🇳 · P. Ramadevi (IIT Bombay)🇮🇳

   Examining quantum electrodynamics in non-commutative (NC) spaces along with composite operators in these spaces, we show that i) any charge g for a fermion matter field is allowed provided the basic NC photon-photon coupling is g, however no other multiples of g are permitted and ii) composite operators do not have a simple transformation which can be attributed to the effective total charge of the composite particle. Taken together these results place a limit on the scale of non-commutativity to be at most smaller that current LHC limits for compositeness. Furthermore, they also suggest that a substructure at still smaller scales is needed if such spaces are to be a physical reality.

   hep-phhep-thMod.Phys.Lett.A(2019)·3 citations
10. 10*

    Probing for Extra Top Yukawa Couplings in Light of $t\bar{t}h(125)$ Observation

    Wei-Shu Hou🇹🇼 · Masaya Kohda🇹🇼 · Tanmoy Modak🇹🇼

    The observation of $t\bar{t}h(125)$ production at the Large Hadron Collider (LHC) is the first direct measurement of the top Yukawa coupling. It opens the window on an extra top Yukawa coupling, ${\rho }_{tt}$, from a second Higgs doublet, without a $Z_2$ symmetry to forbid flavor changing neutral Higgs couplings. We show that $t\bar{t}h$ and Higgs property measurements at the High Luminosity LHC can constrain the $\mathrm{Re}{\rho }_{tt}$--$\mathrm{Im}{\rho }_{tt}$ parameter space that could drive electroweak baryogenesis, but the ${\Gamma }_h$ width measurement must be considerably improved beyond current projections.

    hep-phhep-exPRD(2018)·31 citations
11. 11*

    Flavor anomalies and dark matter in SUSY with an extra U(1)

    Luc Darmé🇵🇱 · Kamila Kowalska🇵🇱 · Leszek Roszkowski🇵🇱 · Enrico Maria Sessolo🇵🇱

    Motivated by the recent anomalies in $b\to s$ transitions that emerged at LHCb, we consider a model with an $L_{\mu }-L_{\tau }$ gauge symmetry and additional vector-like fermions. We find that by introducing supersymmetry the model can be made consistent with the long-standing deviation in the measured value of the anomalous magnetic moment of the muon, $g-2$, and neutralino dark matter of broad mass ranges and properties. In particular, dark matter candidates include the well-known 1 TeV higgsino, which in the MSSM is typically not compatible with solutions to the $g-2$ puzzle. Moreover, its spin-independent cross section could be at the origin of the recent small excess in XENON-1T data. We apply to the model constraints arising from flavor precision measurements and direct searches at the Large Hadron Collider and show that they do not currently exclude the relevant parameter space regions.

    hep-phastro-ph.COhep-exJHEP(2018)·38 citations
12. 12*

    Axion Isocurvature Perturbations in Low-Scale Models of Hybrid Inflation

    Kai Schmitz🇩🇪 · Tsutomu T. Yanagida🇯🇵

    The QCD axion solves the strong CP problem and represents an attractive particle candidate for cold dark matter (CDM). However, quantum fluctuations of the axion field during inflation easily result in large CDM isocurvature perturbations that are in conflict with observations of the cosmic microwave background (CMB). In this paper, we demonstrate how this problem can be solved in low-scale models of hybrid inflation that may emerge from supersymmetric grand unified theories. We consider both F-term hybrid inflation (FHI) and D-term hybrid inflation (DHI) in supergravity, explicitly taking into account the effect of hidden-sector supersymmetry breaking. We discuss the production of cosmic strings and show how the soft terms in the scalar potential readily allow to achieve the correct scalar spectral index. In both cases, we are able to identify large regions in parameter space that are consistent with all constraints. In particular, we find that evading the CDM isocurvature constraint always requires a small Yukawa or gauge coupling of O(10^-3) or smaller. This translates into upper bounds on the gravitino mass of O(10^5) GeV in FHI and O(10^9) GeV in DHI. Our results point to interesting scenarios in well-motivated parameter regions that will be tested in future axion and CMB experiments.

    hep-phastro-ph.COhep-thPRD(2018)·28 citations
13. 13*

    Short-Range Neutrinoless Double Beta Decay Mechanisms

    Lukas Graf🇬🇧 · Frank F. Deppisch🇬🇧 · Francesco Iachello🇺🇸 · Jenni Kotila🇫🇮

    Neutrinoless double beta decay can significantly help to shed light on the issue of non-zero neutrino mass, as observation of this lepton number violating process would imply neutrinos are Majorana particles. However, the underlying interaction does not have to be as simple as the standard neutrino mass mechanism. The entire variety of neutrinoless double beta decay mechanisms can be approached effectively. In this work we focus on a theoretical description of short-range effective contributions to neutrinoless double beta decay, which are equivalent to 9-dimensional effective operators incorporating the appropriate field content. We give a detailed derivation of the nuclear matrix elements and phase space factors corresponding to individual terms of the effective Lagrangian. Using these, we provide general formulae for the neutrinoless double beta decay half-life and angular correlation of the outgoing electrons.

    hep-phnucl-thPRD(2018)·75 citations
14. 14*

    Modelling top partner-vector resonance phenomenology

    Juan Yepes🇨🇱 · Alfonso Zerwekh🇨🇱

    We have analysed the observable consequences of the interactions of spin-1 resonances coupled to the invariant fermionic currents that arise in an $SO(5)$ Composite Higgs set-up. The phenomenology entailed by such interactions is thoroughly analysed by studying heavy vector resonances production and decay modes in the viable resonance mass range. Additionally, the production of double and single-composite fermion final states has been scanned along the fermion mass scale. Such production is mediated by the SM gauge and Higgs interactions, and also by charged and neutral vector resonances. The coupling between the new fermions and vector resonances induces a sizeable effect in the production rates. We use the recent 13 TeV LHC searches for vector-like quarks to constrain our parameter space. Specifically, we explore the allowed regions by analysing the decays of a heavy vector-like quark in the $Wb$-channel. We conclude that generically the impact of the couplings between the spin-1 and spin-1/2 resonances will substantially reduce the permitted regions, leading us to test the sensitivity of the parametric dependence in the light of exotic matter interactions.

    hep-phNPB(2019)·11 citations
15. 15*

    Coherent and incoherent production of vector mesons in ultraperipheral collisions of Xenon-ions within the QCD parton saturation approach

    F. Kopp🇧🇷 · M.V.T. Machado🇧🇷

    In this paper we analyse the exclusive vector meson photoproduction in the recent run using Xenon-ions at energy of 5.44 TeV performed by the Large Hadron Collider. We focus on the ultraperipheral collisions and provide theoretical predictions for coherent and incoherent cross sections within the color dipole approach and gluon saturation framework. The rapidity distribution is investigated in both cases and comparison to other approaches available at literature is done. We show that the expected yields are enough to perform reliable cross section measurements for light mesons as ${\rho }^0$ and $\varphi$.

    hep-phPRD(2018)·7 citations
16. 16*

    Quark-antiquark potential from a deformed AdS/QCD

    Rodrigo C. L. Bruni🇧🇷 · Eduardo Folco Capossoli🇧🇷 · Henrique Boschi-Filho🇧🇷

    In this work we calculate the static limit of the energy for a quark-antiquark pair from the Nambu-Goto action using a holographic approach with a deformed AdS space, with warp factor $\exp \{(\kappa z{)}^n/n\}$. From this energy we derive the Cornell potential for the quark-antiquark interaction. We also find a range of values for our parameters which fits exactly the Cornell potential parameters. In particular, setting the zero energy of the Cornell potential at 0.33 fermi, we find that $\kappa =0.56$ GeV and $n=1.3$.

    ↳ hep-thhep-phAdv.High Energy Phys.(2019)·26 citations
17. 17*

    Pseudorapidity and initial energy densities in p+p and heavy ion collisions at RHIC and LHC

    Z-F. Jiang🇨🇳 · M. Csanad🇭🇺 · G. Kasza🇭🇺 · C-B. Yang🇨🇳 · T. Csorgo🇭🇺

    A known exact and accelerating solution of relativistic hydrodynamics for perfect fluids is utilized to describe pseudorapidity densities of $\sqrt{s_{NN}}=5.02$ TeV Pb$+$Pb and $\sqrt{s}=13$ TeV $p$$+$$p$ collisions at LHC. We evaluate a conjectured initial energy densities ${ϵ}_{\mathrm{corr}}$ in these collisions, and compare them to Bjorken's initial energy density estimates, and to results for Pb$+$Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV and $p$$+$$p$ collisions at $\sqrt{s}=7$ and 8 TeV.

    ↳ nucl-thhep-phActa Phys. Pol. B Proc. Suppl. vol. 12 (2…·12 citations
18. 18*

    Kubo formulas for thermodynamic transport coefficients

    Pavel Kovtun🇨🇦 · Ashish Shukla🇨🇦

    Uncharged relativistic fluids in 3+1 dimensions have three independent thermodynamic transport coefficients at second order in the derivative expansion. Fluids with a single global $U(1)$ current have nine, out of which seven are parity preserving. We derive the Kubo formulas for all nine thermodynamic transport coefficients in terms of equilibrium correlation functions of the energy-momentum tensor and the current. All parity-preserving coefficients can be expressed in terms of two-point functions in flat space without external sources, while the parity-violating coefficients require three-point functions. We use the Kubo formulas to compute the thermodynamic coefficients in several examples of free field theories.

    ↳ hep-thhep-phnucl-thJHEP(2018)·44 citations
19. 19*

    Preinflationary dynamics of $\alpha -$attractor in loop quantum cosmology

    M. Shahalam🇨🇳 · M. Sami🇮🇳 · Anzhong Wang🇺🇸

    We systematically study the preinflationary dynamics of the spatially flat Friedmann-Lemaitre-Robertson-Walker universe filled with a single scalar field that has the generalized $\alpha -$attractor potentials, in the framework of loop quantum cosmology, in which the big bang singularity is replaced generically by a non-singular quantum bounce due to purely quantum geometric effects. The evolution can be divided into two different classes, one is dominated initially (at the quantum bounce) by the kinetic energy of the scalar field, and one is not. In both cases, we identify numerically the physically viable initial conditions that lead to not only a slow-roll inflationary phase, but also enough $e$-folds to be consistent with observations, and find that the output of such a viable slow-roll inflationary phase is generic. In addition, we also show that in the case when the evolution of the universe is dominated initially by the kinetic energy of the scalar field (except for a very small set in the phase space), the evolution before reheating is aways divided into three different phases: {\em bouncing, transition and slow-roll inflation}. This universal feature does not depend on the initial conditions of the system nor on the specific potentials of the scalar field, as long as it is dominated initially by the kinetic energy of the scalar field at the bounce. Moreover, we carry out phase space analyses for the models under consideration and compare our results with the power-law and Starobinsky potentials.

    ↳ astro-ph.COgr-qchep-phhep-thPRD(2018)·31 citations
20. 20*

    Directional axion detection

    Stefan Knirck🇩🇪 · Alexander J. Millar🇩🇪 · Ciaran A. J. O'Hare🇪🇸 · Javier Redondo🇪🇸 · Frank D. Steffen🇩🇪

    We develop a formalism to describe extensions of existing axion haloscope designs to those that possess directional sensitivity to incoming dark matter axion velocities. The effects are measurable if experiments are designed to have dimensions that approach the typical coherence length for the local axion field. With directional sensitivity, axion detection experiments would have a greatly enhanced potential to probe the local dark matter velocity distribution. We develop our formalism generally, but apply it to specific experimental designs, namely resonant cavities and dielectric disk haloscopes. We demonstrate that these experiments are capable of measuring the daily modulation of the dark matter signal and using it to reconstruct the three-dimensional velocity distribution. This allows one to measure the Solar peculiar velocity, probe the anisotropy of the dark matter velocity ellipsoid and identify cold substructures such as the recently discovered streams near to Earth. Directional experiments can also identify features over much shorter timescales, potentially facilitating the mapping of debris from axion miniclusters.

    ↳ astro-ph.COhep-phJCAP(2018)·87 citations
21. 21*

    Searching for Dark Matter with Paleo-Detectors

    Sebastian Baum🇸🇪 · Andrzej K. Drukier🇸🇪 · Katherine Freese🇸🇪 · Maciej Górski🇵🇱 · Patrick Stengel🇸🇪

    A large experimental program is underway to extend the sensitivity of direct detection experiments, searching for interaction of Dark Matter with nuclei, down to the neutrino floor. However, such experiments are becoming increasingly difficult and costly due to the large target masses and exquisite background rejection needed for the necessary improvements in sensitivity. We investigate an alternative approach to the detection of Dark Matter-nucleon interactions: Searching for the persistent traces left by Dark Matter scattering in ancient minerals obtained from much deeper than current underground laboratories. We estimate the sensitivity of paleo-detectors, which extends far beyond current upper limits for a wide range of Dark Matter masses. The sensitivity of our proposal also far exceeds the upper limits set by Snowden-Ifft et al. more than three decades ago using ancient Mica in an approach similar to paleo-detectors.

    ↳ astro-ph.COastro-ph.IMhep-phPLB(2020)·68 citations
22. 22*

    Materials Informatics for Dark Matter Detection

    R. Matthias Geilhufe🇸🇪 · Bart Olsthoorn🇸🇪 · Alfredo Ferella🇸🇪 · Timo Koski🇸🇪 · Felix Kahlhoefer🇩🇪 · Jan Conrad🇸🇪 · Alexander V. Balatsky🇸🇪

    Dark Matter particles are commonly assumed to be weakly interacting massive particles (WIMPs) with a mass in the GeV to TeV range. However, recent interest has shifted towards lighter WIMPs, which are more difficult to probe experimentally. A detection of sub-GeV WIMPs would require the use of small gap materials in sensors. Using recent estimates of the WIMP mass, we identify the relevant target space towards small gap materials (100-10 meV). Dirac Materials, a class of small- or zero-gap materials, emerge as natural candidates for sensors for Dark Matter detection. We propose the use of informatics tools to rapidly assay materials band structures to search for small gap semiconductors and semimetals, rather than focusing on a few preselected compounds. As a specific example of the proposed strategy, we use the organic materials database (omdb.diracmaterials.org) to identify organic candidates for sensors: the narrow band gap semiconductors BNQ-TTF and DEBTTT with gaps of 40 and 38 meV, and the Dirac-line semimetal (BEDT-TTF)$\cdot$Br which exhibits a tiny gap of $\approx$ 50 meV when spin-orbit coupling is included. We outline a novel and powerful approach to search for dark matter detection sensor materials by means of a rapid assay of materials using informatics tools.

    ↳ cond-mat.mtrl-sciastro-ph.HEastro-ph.IMhep-ex+1Phys.Status Solidi RRL(2018)·35 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.