Date: Mon, 29 Jun 20 00:24:09 GMT Subject: hep-ex daily 5 new + 21 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: hep-ex@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Wed 24 Jun 20 18:00:00 GMT to Fri 26 Jun 20 18:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:2006.14710 Date: Thu, 25 Jun 2020 21:21:23 GMT (203kb) Title: Upper limit on the $\eta\to\pi^{+}\pi^{-}$ branching fraction with the KLOE experiment Authors: D. Babusci, M. Berlowski, C. Bloise, F. Bossi, P. Branchini, A. Budano, B. Cao, F. Ceradini, P. Ciambrone, F. Curciarello, E. Czerwi\'nski, G. D'Agostini, E. Dan\`e, V. De Leo, E. De Lucia, A. De Santis, P. De Simone, A. Di Cicco, A. Di Domenico, D. Domenici, A. D'Uffizi, A. Fantini, P. Fermani, S. Fiore, A. Gajos, P. Gauzzi, S. Giovannella, E. Graziani, V. L. Ivanov, T. Johansson, X. Kang, D. Kisielewska-Kami\'nska, E. A. Kozyrev, W. Krzemien, A. Kupsc, P. A. Lukin, G. Mandaglio, M. Martini, R. Messi, S. Miscetti, D. Moricciani, P. Moskal, S. Parzych, A. Passeri, V. Patera, E. Perez del Rio, P. Santangelo, M. Schioppa, A. Selce, M. Silarski, F. Sirghi, E. P. Solodov, L. Tortora, G. Venanzoni, W. Wi\'slicki, M. Wolke Categories: hep-ex Comments: 11 pages, 3 figures \\ Based on an integrated luminosity of 1.61 fb$^{-1}$ $e^+e^-$ collision data collected with the KLOE detector at DA$\Phi$NE, the Frascati $\phi$-factory, a search for the $P$- and $CP$-violating decay $\eta\to\pi^{+}\pi^{-}$ has been performed. Radiative $\phi\to\eta\gamma$ decay is exploited to access the $\eta$ mesons. No signal is observed in the $\pi^{+}\pi^{-}$ invariant mass spectrum, and the upper limit on the branching fraction at 90\% confidence level is determined to be ${\mathcal B}(\eta\to\pi^{+}\pi^{-})<4.9\times10^{-6}$, which is approximately three times smaller than the previous KLOE result. From the combination of these two measurements we get ${\mathcal B}(\eta\to\pi^{+}\pi^{-}) < 4.4\times10^{-6}$ at 90\% confidence level. \\ ( https://arxiv.org/abs/2006.14710 , 203kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14745 Date: Fri, 26 Jun 2020 01:18:43 GMT (1762kb,D) Title: Point Proposal Network for Reconstructing 3D Particle Positions with Sub-Pixel Precision in Liquid Argon Time Projection Chambers Authors: Laura Domin\'e, Kazuhiro Terao Categories: hep-ex cs.CV physics.ins-det \\ Liquid Argon Time Projection Chambers (LArTPC) are particle imaging detectors recording 2D or 3D images of numerous complex trajectories of charged particles. Identifying points of interest in these images, such as the starting and ending points of particles trajectories, is a crucial step of identifying and analyzing these particles and impacts inference of physics signals such as neutrino interaction. The Point Proposal Network is designed to discover specific points of interest, namely the starting and ending points of track-like particle trajectories such as muons and protons, and the starting points of electromagnetic shower-like particle trajectories such as electrons and gamma rays. The algorithm predicts with a sub-voxel precision their spatial location, and also determines the category of the identified points of interest. Using the PILArNet public LArTPC data sample as a benchmark, our algorithm successfully predicted 96.8%, 97.8%, and 98.1% of 3D points within the voxel distance of 3, 10, and 20 from the provided true point locations respectively. For the predicted 3D points within 3 voxels of the closest true point locations, the median distance is found to be 0.25 voxels, achieving the sub-voxel level precision. We report that the majority of predicted points that are more than 10 voxels away from the closest true point locations are legitimate mistakes, and our algorithm achieved high enough accuracy to identify issues associated with a small fraction of true point locations provided in the dataset. Further, using those predicted points, we demonstrate a set of simple algorithms to cluster 3D voxels into individual track-like particle trajectories at the clustering efficiency, purity, and Adjusted Rand Index of 83.2%, 96.7%, and 94.7% respectively. \\ ( https://arxiv.org/abs/2006.14745 , 1762kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14849 Date: Fri, 26 Jun 2020 08:01:04 GMT (294kb,D) Title: Recent results on $B \to \mu^+ \mu^-$ decays with the CMS experiment Authors: Urs Langenegger (for the CMS collaboration) Categories: hep-ex Comments: Invited short review submitted to MPLA Report-no: CMS CR-2020/115 \\ Results on $B \to \mu^+ \mu^-$ decays with the CMS experiment are reported, using 61 fb$^{-1}$ of data recorded during LHC Run 1 and 2016. With an improved muon identification algorithm and refined unbinned maximum likelihood fitting methods, the decay $B_s^0 \to \mu^+ \mu^-$ is observed with a significance of 5.6 standard deviations. Its branching fraction is measured to be BF($B^0_s \to \mu^+ \mu^-$) = [2.9+/-0.7(exp)+/-0.2(frag)]$\times 10^{-9}$, where the first error is the combined statistical and systematic uncertainty and the second error quantifies the uncertainty of the $B^0_s$ and $B^+$ fragmentation probability ratio. The $B^0_s \to \mu^+ \mu^-$ effective lifetime is $\tau_{\mu^+ \mu^-} =1.70^{+0.61}_{-0.44}$ps. No evidence for the decay $B^0 \to \mu^+ \mu^-$ is found and an upper limit of BF($B^0 \to \mu^+ \mu^-$) < 3.6$\times 10^{-10}$ (at 95% confidence level) is determined. All results are consistent with the standard model of particle physics. \\ ( https://arxiv.org/abs/2006.14849 , 294kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14918 Date: Fri, 26 Jun 2020 11:40:31 GMT (214kb) Title: First Search for the $K_L \to \pi^0 \gamma$ Decay Authors: J. K. Ahn, B. Beckford, M. Campbell, S. H. Chen, J. M. Choi, J. Comfort, K. Dona, M. S. Farrington, N. Hara, H. Haraguchi, Y. B. Hsiung, M. Hutcheson, T. Inagaki, M. Isoe, I. Kamiji, E. J. Kim, J. L. Kim, H. M. Kim, T. K. Komatsubara, K. Kotera, J. W. Lee, G. Y. Lim, C. Lin, Q. S. Lin, Y. Luo, T. Mari, T. Matsumura, D. Mcfarland, K. Miyazaki, R. Murayama, K. Nakagiri, H. Nanjo, H. Nishimiya, Y. Noichi, T. Nomura, T. Nunes, M. Ohsugi, H. Okuno, J. C. Redeker, K. Sato, T. Sato, Y. Sato, N. Shimizu, T. Shimogawa, T. Shinkawa, S. Shinohara, K. Shiomi, R. Shiraishi, S. Su, Y. Sugiyama, S. Suzuki, Y. Tajima, M. Taylor, M. Tecchio, M. Togawa, T. Toyoda, Y. C. Tung, Q. H. Vuong, Y. W. Wah, H. Watanabe, T. Yamanaka, H. Y. Yoshida Categories: hep-ex \\ We report the first search for the $K_L \to \pi^0 \gamma$ decay, which is forbidden by Lorentz invariance, using the data from 2016 to 2018 at the J-PARC KOTO experiment. With a single event sensitivity of $(7.1\pm 0.3_{\rm stat.} \pm 1.6_{\rm syst.})\times 10^{-8}$, no candidate event was observed in the signal region. The upper limit on the branching fraction was set to be $1.7\times 10^{-7}$ at the 90\% confidence level. \\ ( https://arxiv.org/abs/2006.14918 , 214kb) ------------------------------------------------------------------------------ \\ arXiv:2006.15115 Date: Fri, 26 Jun 2020 17:21:23 GMT (7865kb,D) Title: First Direct Experimental Evidence of CNO neutrinos Authors: M. Agostini, K. Altenm\"uller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, R. Biondi, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, P. Cavalcante, A. Chepurnov, D. D'Angelo, S. Davini, A. Derbin, A. Di Giacinto, V. Di Marcello, X.F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, A. Formozov, D. Franco, C. Galbiati, C. Ghiano, M. Giammarchi, A. Goretti, A.S. G\"ottel, M. Gromov, D. Guffanti, Aldo Ianni, Andrea Ianni, A. Jany, D. Jeschke, V. Kobychev, G. Korga, S. Kumaran, M. Laubenstein, E. Litvinovich, P. Lombardi, I. Lomskaya, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, J. Martyn, E. Meroni, M. Meyer, L. Miramonti, M. Misiaszek, V. Muratova, B. Neumair, M. Nieslony, R. Nugmanov, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Papp, L. Pellicci, \"O. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, G. Raikov, M.T. Ranalli, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Sch\"onert, D. Semenov, G. Settanta, M. Skorokhvatov, A. Singhal, O. Smirnov, A. Sotnikov, Y. Suvorov, R. Tartaglia, G. Testera, J. Thurn, E. Unzhakov, F.L. Villante, A. Vishneva, R.B. Vogelaar, F. von Feilitzsch, M. Wojcik, M. Wurm, S. Zavatarelli, K. Zuber, G. Zuzel. The BOREXINO Collaboration Categories: hep-ex astro-ph.IM astro-ph.SR physics.ins-det Comments: 17 pages, 16 figures MSC-class: 85-05 ACM-class: G.3.1 \\ We report the direct observation of neutrinos produced in the carbon-nitrogen-oxygen (CNO) fusion cycle in the Sun with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. This is the first experimental evidence of the existence of such reaction sequence in a star. The CNO solar neutrino interaction rate is $7.2^{+3.0}_{-1.7}$ counts per day per $100$ tonnes of target at 68% C.L., corresponding to a flux of neutrinos on Earth of $7.0^{+3.0}_{-2.0}\times10^8$ cm$^{-2}$ s$^{-1}$. The absence of CNO signal is disfavoured at 5$\sigma$. \\ ( https://arxiv.org/abs/2006.15115 , 7865kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:2006.13942 (*cross-listing*) Date: Wed, 24 Jun 2020 18:00:01 GMT (566kb,D) Title: Supernova Muons: New Constraints on Z' Bosons, Axions, and ALPs Authors: Djuna Croon, Gilly Elor, Rebecca K. Leane, Samuel D. McDermott Categories: hep-ph astro-ph.CO astro-ph.HE hep-ex Comments: 29 pages, several hot pink figures Report-no: MIT-CTP/5214, FERMILAB-PUB-20-246-A-T \\ New light particles produced in supernovae can lead to additional energy loss, and a consequent deficit in neutrino production in conflict with the neutrinos observed from Supernova 1987A (SN1987A). Contrary to the majority of previous SN1987A studies, we examine the impact of $Z'$ bosons, axions, and axion-like particles (ALPs) interacting with the muons produced in SN1987A. For the first time, we find constraints on generic $Z'$ bosons coupled to muons, and apply our results to particle models including gauged $L_\mu-L_\tau$ number, $U(1)_{L_\mu-L_\tau}$, and gauged $B-L$ number, $U(1)_{B-L}$. We constrain $Z'$ bosons from arbitrarily low masses up to about 250-500 MeV, and down to about $10^{-9}$ in $Z'$-muon coupling, largely independent of the $Z'$ mass. We also extend previous work on axion-muon couplings by examining the importance of loop-level interactions, as well as performing calculations over a wider range of axion masses. We constrain muon-coupled axions from arbitrarily low masses up to about 400-750 MeV, with bounds extending down to axion-muon couplings of approximately $10^{-8}$ GeV$^{-1}$. We conclude that supernovae broadly provide a sensitive probe of new lightly-coupled particles interacting with muons. \\ ( https://arxiv.org/abs/2006.13942 , 566kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14075 (*cross-listing*) Date: Wed, 24 Jun 2020 22:15:18 GMT (125kb,D) Title: Kaon parton distributions: revealing Higgs modulation of emergent mass Authors: Zhu-Fang Cui, Minghui Ding, Fei Gao, Khepani Raya, Daniele Binosi, Lei Chang, Craig D. Roberts, Jose Rodriguez-Quintero and Sebastian M. Schmidt Categories: hep-ph hep-ex hep-lat nucl-ex nucl-th Comments: 5 pages, 2 figures, 1 table Report-no: NJU-INP 019/20 \\ Beginning with results for the leading-twist two-particle distribution amplitudes of $\pi$- and $K$-mesons, each of which exhibits dilation driven by the mechanism responsible for the emergence of hadronic mass, we develop parameter-free predictions for the pointwise behaviour of all $K$ distribution functions (DFs), including glue and sea, and comparisons with the analogous $\pi$ distributions. The large-$x$ behaviour of each DF meets expectations based on quantum chromodynamics. At the resolving scale of existing measurements, the kaon's light-front momentum is shared as follows: $\langle x_{\rm valence} \rangle = 0.42(3)$, $\langle x_{\rm glue} \rangle = 0.44(2)$, $\langle x_{\rm sea} \rangle = 0.14(2)$. The kaon's glue and sea distributions are similar to those in the pion; but the inclusion of mass-dependent splitting functions, expressing Higgs-induced current-quark mass splittings, introduces differences on the valence-quark domain. \\ ( https://arxiv.org/abs/2006.14075 , 125kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14089 (*cross-listing*) Date: Wed, 24 Jun 2020 22:40:34 GMT (510kb,D) Title: Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess Authors: Joseph Bramante, Ningqiang Song Categories: hep-ph astro-ph.CO hep-ex Comments: 7 pages, 3 figures \\ The identity of dark matter is being sought with increasingly sensitive and voluminous underground detectors. Recently the XENON1T collaboration reported excess electronic recoil events, with most of these having recoil energies around $1-30$ keV. We show that a straightforward model of inelastic dark matter produced via early universe thermal freeze-out annihilation can account for the XENON1T excess. Remarkably, this dark matter model consists of a few simple elements: sub-GeV mass Dirac fermion dark matter coupled to a lighter dark photon kinetically mixed with the Standard Model photon. A scalar field charged under the dark U(1) gauge symmetry can provide a mass for the dark photon and splits the Dirac fermion component state masses by a few keV, which survive in equal abundance and interact inelastically with electrons and nuclei. \\ ( https://arxiv.org/abs/2006.14089 , 510kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14359 (*cross-listing*) Date: Thu, 25 Jun 2020 12:58:53 GMT (1183kb,D) Title: Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions Authors: CMS Collaboration Categories: physics.ins-det hep-ex Comments: Submitted to JINST. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EGM-18-001 (CMS Public Pages) Report-no: CERN-EGM-18-001, CERN-EP-2020-105 \\ A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the increased out-of-time pileup contribution to the signal following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from collision data demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV. \\ ( https://arxiv.org/abs/2006.14359 , 1183kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14399 (*cross-listing*) Date: Thu, 25 Jun 2020 13:38:30 GMT (91kb) Title: Modifications on parameters of $Z(4430)$ in a dense medium Authors: K. Azizi, N. Er Categories: hep-ph hep-ex hep-lat nucl-th Comments: 12 Pages, 5 Figures and 2 Tables \\ The charmonium-like resonance $ Z_c(3900) $ and its excited state $ Z(4430) $ are among the particles that are serious candidates for double heavy tetraquarks. Calculations of different parameters associated with these states both in the vacuum and the medium with finite density are of great importance. Such investigations help us clarify their nature, internal quark-gluon organization and quantum numbers. In this accordance, we extend our previous analyses on the ground state $ Z_c(3900) $ to investigate the medium modifications on different parameters of the excited $ Z(4430) $ state. In particular, we calculate the mass, vector self-energy and current coupling of $ Z(4430) $ in terms of density, up to a density comparable to the density of the core of neutron stars. The obtained results may help experimental groups aiming to study the behavior of exotic states at higher densities. \\ ( https://arxiv.org/abs/2006.14399 , 91kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14445 (*cross-listing*) Date: Thu, 25 Jun 2020 14:24:24 GMT (312kb) Title: Masses of fully heavy tetraquarks $QQ \bar Q \bar Q$ in an extended relativized quark model Authors: Qi-Fang L\"u, Dian-Yong Chen, Yu-Bing Dong Categories: hep-ph hep-ex nucl-th Comments: 7 pages, 3 figures, comments and suggestions are welcome \\ Inspired by recent measurement of possible fully charmed tetraquarks in LHCb Collaboration, we investigate the mass spectra of fully heavy tetraquarks $QQ \bar Q \bar Q$ in an extended relativized quark model. Our estimations indicate that the broad structure around 6.4 GeV should contain one or more ground $cc \bar c \bar c$ tetraquark states, while the narrow structure near 6.9 GeV can be categorized as the first radial excitation of $cc \bar c \bar c$ system. Moreover, with the wave functions of the tetraquarks and mesons, the strong decays of tetraquarks into heavy quarkonium pair are qualitatively discussed, which can be further checked by the LHCb and CMS Collaborations. \\ ( https://arxiv.org/abs/2006.14445 , 312kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14521 (*cross-listing*) Date: Thu, 25 Jun 2020 16:17:07 GMT (3789kb,D) Title: Exploring New Physics with O(keV) Electron Recoils in Direct Detection Experiments Authors: Itay M. Bloch, Andrea Caputo, Rouven Essig, Diego Redigolo, Mukul Sholapurkar, Tomer Volansky Categories: hep-ph hep-ex Comments: 41 pages, 6 pages references, 24 figures \\ Motivated by the recent XENON1T results, we explore various new physics models that can be discovered through searches for electron recoils in O(keV)-threshold direct-detection experiments. First, we consider the absorption of light bosons, either as dark matter relics or being produced directly in the Sun. In the latter case, we find that keV mass bosons produced in the Sun provide an adequate fit to the data but are excluded by stellar cooling constraints. We address this tension by introducing a novel Chameleon-like axion model, which can explain the excess while evading the stellar bounds. We find that absorption of bosonic dark matter provides a viable explanation for the excess only if the dark matter is a dark photon or an axion. In the latter case, photophobic axion couplings are necessary to avoid X-ray constraints. Second, we analyze models of dark matter-electron scattering to determine which models might explain the excess. Standard scattering of dark matter with electrons is generically in conflict with data from lower-threshold experiments. Momentum-dependent interactions with a heavy mediator can fit the data with a GeV dark matter mass but are in tension with collider constraints. Next, we consider dark matter consisting of two (or more) states that have a small mass splitting. The exothermic (down)scattering of the heavier state to the lighter state can fit the data for keV mass splittings. Finally, we consider a subcomponent of dark matter that is accelerated by scattering off cosmic rays, finding that dark matter interacting though an O(100 keV)-mass mediator can fit the data. The cross sections required in this scenario are, however, generically challenged by complementary probes of the light mediator. Throughout our study, we implement an unbinned Monte Carlo analysis and use an improved energy reconstruction of the XENON1T events. \\ ( https://arxiv.org/abs/2006.14521 , 3789kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14529 (*cross-listing*) Date: Thu, 25 Jun 2020 16:25:43 GMT (678kb,D) Title: From oscillation dip to oscillation valley in atmospheric neutrino experiments Authors: Anil Kumar, Amina Khatun, Sanjib Kumar Agarwalla, Amol Dighe Categories: hep-ph hep-ex physics.ins-det Comments: 26 pages, 11 figures, 5 tables, comments are welcome Report-no: IP/BBSR/2020-3, TIFR/TH/20-19 \\ Atmospheric neutrino experiments can show the "oscillation dip" feature in data, due to their sensitivity over a large $L/E$ range. In experiments that can distinguish between neutrinos and antineutrinos, like INO, oscillation dips can be observed in both these channels separately. We present the dip-identification algorithm employing a data-driven approach -- one that uses the asymmetry in the up and down events, binned in the reconstructed $L/E$ of muons -- to demonstrate the dip, which would confirm the oscillation hypothesis. We further propose, for the first time, the identification of an "oscillation valley" in the reconstructed ($E_\mu$,$\,\cos\theta_\mu$) plane, feasible for detectors like ICAL having excellent muon energy and direction resolutions. We illustrate how this two-dimensional valley would offer a clear visual representation and test of the $L/E$ dependence, the alignment of the valley quantifying the atmospheric mass-squared difference. Taking into account the statistical fluctuations in the 10-year simulated data at ICAL, we estimate the precision to which atmospheric neutrino oscillation parameters would be determined using our procedure. Our approach can be adopted by other atmospheric neutrino experiments to establish neutrino oscillations in terms of ($L$,$\,E$) rather than $L/E$. \\ ( https://arxiv.org/abs/2006.14529 , 678kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14590 (*cross-listing*) Date: Thu, 25 Jun 2020 17:35:41 GMT (37kb,D) Title: XENON1T Anomaly: A Light $Z^\prime$ Authors: Manfred Lindner, Yann Mambrini, Tessio B. de Melo, Farinaldo S. Queiroz Categories: hep-ph astro-ph.HE hep-ex hep-th Comments: 6 pages, 1 figure Report-no: IIP-2020 \\ We have witnessed the beginning of an era where dark matter and neutrino detectors can probe similar new physics phenomena. Motivated by the low-energy electron recoil spectrum observed by the dark matter experiment, XENON1T, at Gran Sasso laboratory, we interpret the observed signal not in terms of a dark matter particle, but rather in the context of a new light $Z^\prime$ gauge boson. We discuss how such a light $Z^\prime$ rises in a Two Higgs Doublet Model augmented by an abelian gauge symmetry where neutrino masses and the flavor problem are addressed, in agreement with neutrino-electron scattering data. \\ ( https://arxiv.org/abs/2006.14590 , 37kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14598 (*cross-listing*) Date: Thu, 25 Jun 2020 17:42:32 GMT (973kb,D) Title: Re-examining the Solar Axion Explanation for the XENON1T Excess Authors: Christina Gao, Jia Liu, Lian-Tao Wang, Xiao-Ping Wang, Wei Xue, Yi-Ming Zhong Categories: hep-ph hep-ex Comments: 7 pages, 4 figures \\ The XENON1T collaboration has observed an excess in electronic recoil events below $5~\mathrm{keV}$ over the known background, which could originate from beyond-the-Standard-Model physics. The solar axion is a well-motivated model that has been proposed to explain the excess, though it has tension with astrophysical observations. The axions traveled from the Sun can be absorbed by the electrons in the xenon atoms via the axion-electron coupling. Meanwhile, they can also scatter with the atoms through the inverse Primakoff process via the axion-photon coupling, which emits a photon and mimics the electronic recoil signals. We found that the latter process cannot be neglected. After including the $\rm{keV}$ photon produced via inverse Primakoff in the detection, the tension with the astrophysical constraints can be significantly reduced. We also explore scenarios involving additional new physics to further alleviate the tension with the astrophysical bounds. \\ ( https://arxiv.org/abs/2006.14598 , 973kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14603 (*cross-listing*) Date: Thu, 25 Jun 2020 17:45:44 GMT (608kb) Title: Extension of the INFN Tier-1 on a HPC system Authors: Tommaso Boccali, Stefano Dal Pra, Daniele Spiga, Diego Ciangottini, Stefano Zani, Concezio Bozzi, Alessandro De Salvo, Andrea Valassi, Francesco Noferini, Luca dell Agnello, Federico Stagni, Alessandra Doria, Daniele Bonacorsi Categories: physics.comp-ph hep-ex Comments: 13 pages \\ The INFN Tier-1 located at CNAF in Bologna (Italy) is a center of the WLCG e-Infrastructure, supporting the 4 major LHC collaborations and more than 30 other INFN-related experiments. After multiple tests towards elastic expansion of CNAF compute power via Cloud resources (provided by Azure, Aruba and in the framework of the HNSciCloud project), and building on the experience gained with the production quality extension of the Tier-1 farm on remote owned sites, the CNAF team, in collaboration with experts from the ALICE, ATLAS, CMS, and LHCb experiments, has been working to put in production a solution of an integrated HTC+HPC system with the PRACE CINECA center, located nearby Bologna. Such extension will be implemented on the Marconi A2 partition, equipped with Intel Knights Landing (KNL) processors. A number of technical challenges were faced and solved in order to successfully run on low RAM nodes, as well as to overcome the closed environment (network, access, software distribution, ... ) that HPC systems deploy with respect to standard GRID sites. We show preliminary results from a large scale integration effort, using resources secured via the successful PRACE grant N. 2018194658, for 30 million KNL core hours. \\ ( https://arxiv.org/abs/2006.14603 , 608kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14629 (*cross-listing*) Date: Thu, 25 Jun 2020 18:00:01 GMT (4009kb,D) Title: nNNPDF2.0: Quark Flavor Separation in Nuclei from LHC Data Authors: Rabah Abdul Khalek, Jacob J. Ethier, Juan Rojo, Gijs van Weelden Categories: hep-ph hep-ex nucl-ex nucl-th Comments: 65 pages, 26 figures. The nNNPDF2.0 sets are available from http://nnpdf.mi.infn.it/for-users/nuclear-pdfs/ Report-no: Nikhef/2020-006 \\ We present a model-independent determination of the nuclear parton distribution functions (nPDFs) using machine learning methods and Monte Carlo techniques based on the NNPDF framework. The neutral-current deep-inelastic nuclear structure functions used in our previous analysis, nNNPDF1.0, are complemented by inclusive and charm-tagged cross-sections from charged-current scattering. Furthermore, we include all available measurements of W and Z leptonic rapidity distributions in proton-lead collisions from ATLAS and CMS at $\sqrt{s}=5.02$ TeV and 8.16 TeV. The resulting nPDF determination, nNNPDF2.0, achieves a good description of all datasets. In addition to quantifying the nuclear modifications affecting individual quarks and antiquarks, we examine the implications for strangeness, assess the role that the momentum and valence sum rules play in nPDF extractions, and present predictions for representative phenomenological applications. Our results, made available via the LHAPDF library, highlight the potential of high-energy collider measurements to probe nuclear dynamics in a robust manner. \\ ( https://arxiv.org/abs/2006.14629 , 4009kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14631 (*cross-listing*) Date: Thu, 25 Jun 2020 18:00:02 GMT (1493kb,D) Title: Higgs, top and electro-weak precision measurements at future $e^+ e^-$ colliders; a combined effective field theory analysis with renormalization mixing Authors: Sunghoon Jung, Junghwan Lee, Martin Perell\'o, Junping Tian, Marcel Vos Categories: hep-ph hep-ex Comments: 66 pages, 13 figures \\ This paper presents a combined analysis of the potential of a future electron-positron collider to constrain the Higgs, top and electro-weak (EW) sectors of the Standard Model Effective Field Theory (SMEFT). The leading contributions of operators involving top quarks arise mostly at one-loop suppressed order and can be captured by the renormalization group mixing with Higgs operators. We perform global fits with an extended basis of 29 parameters, including both Higgs and top operators, to the projections for the Higgs, top and electro-weak precision measurements at the International Linear Collider (ILC). The determination of the Higgs boson couplings in the 250 GeV stage of the ILC is initially severely degraded by the additional top-quark degrees of freedom, but can be nearly completely recovered by the inclusion of precise measurements of top-quark EW couplings at the LHC. The physical Higgs couplings are relatively robust, as the top mass is larger than the energy scale of EW processes. The effect of the top operators on the bounds on the Wilson coefficients is much more pronounced and may limit our ability to identify the source of deviations from the Standard Model. Robust global bounds on all Wilson coefficients are only obtained when the 500 GeV stage of the ILC is included. \\ ( https://arxiv.org/abs/2006.14631 , 1493kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14635 (*cross-listing*) Date: Thu, 25 Jun 2020 18:00:04 GMT (1837kb,D) Title: Automated evaluation of electroweak Sudakov logarithms in Sherpa Authors: Enrico Bothmann, Davide Napoletano Categories: hep-ph hep-ex Comments: 17 pages, 4 figures \\ We present an automated implementation for the calculation of one-loop double and single Sudakov logarithms stemming from electroweak radiative corrections within the Sherpa event generation framework, based on the derivation in[1]. At high energies, these logarithms constitute the leading contributions to the full NLO electroweak corrections. As examples, we show applications for relevant processes at both the LHC and future hadron colliders, namely on-shell W boson pair production, EW-induced dijet production and electron-positron production in association with four jets, providing the first estimate of EW corrections at this multiplicity. \\ ( https://arxiv.org/abs/2006.14635 , 1837kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14675 (*cross-listing*) Date: Thu, 25 Jun 2020 19:50:50 GMT (670kb,D) Title: Benefits of MeV-Scale Reconstruction Capabilities in Large Liquid Argon Time Projection Chambers Authors: W. Castiglioni, W. Foreman, I. Lepetic, B. R. Littlejohn, M. Malaker, A. Mastbaum Categories: physics.ins-det hep-ex \\ Using truth-level Monte Carlo simulations of particle interactions in a large volume of liquid argon, we demonstrate physics capabilities enabled by reconstruction of topologically compact and isolated low-energy features, or `blips,' in large liquid argon time projection chamber (LArTPC) events. These features are mostly produced by electron products of photon interactions depositing ionization energy. The blip identification capability of the LArTPC is enabled by its unique combination of size, position resolution precision, and low energy thresholds. We show that consideration of reconstructed blips in LArTPC physics analyses can result in substantial improvements in calorimetry for neutrino and new physics interactions and for final-state particles ranging in energy from the MeV to the GeV scale. Blip activity analysis is also shown to enable discrimination between interaction channels and final-state particle types. In addition to demonstrating these gains in calorimetry and discrimination, some limitations of blip reconstruction capabilities and physics outcomes are also discussed. \\ ( https://arxiv.org/abs/2006.14675 , 670kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14680 (*cross-listing*) Date: Thu, 25 Jun 2020 20:15:42 GMT (560kb,D) Title: Improving the Understanding of Jet Grooming in Perturbation Theory Authors: Andrew J. Larkoski Categories: hep-ph hep-ex Comments: 12 pages, 5 figures \\ Jet grooming has emerged as a necessary and powerful tool in a precision jet physics program. In this paper, we present three results on jet grooming in perturbation theory, focusing on heavy jet mass in $e^+e^-\to$ hadrons collisions, groomed with the modified mass drop tagger. First, we calculate the analytic cross section at leading-order. Second, using the leading-order result and numerical results through next-to-next-to-leading order, we show that cusps in the distribution on the interior of phase space at leading-order are softened at higher orders. Finally, using analytic and numerical results, we show that terms that violate the assumptions of the factorization theorem for groomed jet mass are numerically much smaller than expected from power counting. These results provide important information regarding the convergence of perturbation theory for groomed jet observables and reliable estimates for residual uncertainties in a precision calculation. \\ ( https://arxiv.org/abs/2006.14680 , 560kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14739 (*cross-listing*) Date: Fri, 26 Jun 2020 00:44:52 GMT (836kb,D) Title: Hadron production in elementary nucleon-nucleon reactions from low to ultra-relativistic energies Authors: V. Kireyeu, I. Grishmanovskii, V. Kolesnikov, V. Voronyuk, and E. Bratkovskaya Categories: hep-ph hep-ex nucl-th Comments: 17 pages, 16 figures; submitted to the European Physical Journal A \\ We study the hadron production in $p+p$, $p+n$ and $n+n$ reactions within the microscopic Parton-Hadron-Dynamics (PHSD) transport approach in comparison to PYTHIA 8.2. We discuss the details of the "PHSD tune" of the Lund string model (realized by event generators FRITIOF and PYTHIA) in the vacuum (as in $N+N$ collisions) as well as its in-medium modifications relevant for heavy-ion collisions where a hot and dense matter is produced. We compare the results of PHSD and PYTHIA 8.2 for the excitation function of hadron multiplicities as well as differential rapidity $y$, transverse momentum $p_T$ and $x_F$ distributions in $p+p$, $p+n$ and $n+n$ reactions with the existing experimental data in the energy range $\sqrt{s_{NN}} = 2.7 - 7000$ GeV. We discuss the production mechanisms of hadrons and the role of final state interactions (FSI) due to the hadronic rescattering. We also show the influence of the possible QGP formation on hadronic observables in $p+p$ collisions at LHC energies.We stress the importance of developing a reliable event generator for elementary reactions from low to ultra-relativistic energies in view of actual and upcoming heavy-ion experiments. \\ ( https://arxiv.org/abs/2006.14739 , 836kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14938 (*cross-listing*) Date: Thu, 25 Jun 2020 11:49:08 GMT (130kb,D) Title: Photon Collider for energies 1-2 TeV Authors: Ilya F. Ginzburg, Gleb L. Kotkin Categories: hep-ph hep-ex Comments: 23 pages, 7figures (11), 6 tables. arXiv admin note: substantial text overlap with arXiv:1910.13961 \\ We discuss a photon collider based on the \epe \ linear collider with cms electron energy $2E = 1 \div 2$ TeV (ILC, CLIC,...). We call such device TeV Photon Linear Collider (TeV PLC). This energy region was previously considered hopeless for experiment. The present study leads to a rather optimistic conclusions. We compare properties of TeV PLC with those of the usually discussed {\it standard PLC} with $E\approx 250$ GeV. We show that at the optimal choice of laser the high-energy \ggam \ luminosity integral is about 1/5, and the maximum luminosity is about 1/4 from similar values for the standard PLC. For this choice, the laser flash energy and laser-optical system should be approximately the same as those prepared for the standard PLC. The photon spectrum of TeV PLC is much more monochromatic than that in the standard PLC, it is concentrated in the narrow band near the high-energy limit with an energy spread of about $5\%$. This band is well separated from the low-energy part of the luminosity distribution. \\ ( https://arxiv.org/abs/2006.14938 , 130kb) ------------------------------------------------------------------------------ \\ arXiv:2006.14982 (*cross-listing*) Date: Fri, 26 Jun 2020 13:35:41 GMT (390kb,D) Title: Performance of ALICE AD modules in the CERN PS test beam Authors: M. Broz, J.C. Cabanillas Noris, E. Calvo Villar, C. Duarte Galvan, E. Endress, L.G. Espinoza Beltran, A. Fernandez Tellez, D. Finogeev, A.M. Gago, G. Herrera Corral, T. Kim, A. Kurepin, A.B. Kurepin, N. Kurepin, I. Leon Monzon, M.I. Martinez Hernandez, C. Mayer, M.M. Mieskolainen, R. Orava, L. A. Perez Moreno, J.-P. Revol, M. Rodriguez Cahuantzi, S. Rojas Torres, D. Serebryakov, A. Shabanov, E. Usenko, A. Villatoro Tello Categories: physics.ins-det hep-ex Comments: 12 pages, 9 figures \\ Two modules of the AD detector have been studied with the test beam at the T10 facility at CERN. The AD detector is made of scintillator pads read out by wave-length shifters (WLS)coupled to clean fibres that carry the produced light to photo-multiplier tubes (PMTs). In ALICE the AD is used to trigger and study the physics of diffractive and ultra-peripheral collisions as well as for a variety of technical tasks like beam-gas background monitoring or as a luminometer. The position dependence of the modules' efficiency has been measured and the effect of hits on the WLS or PMTs has been evaluated. The charge deposited by pions and protons has been measured at different momenta of the test beam. The time resolution is determined as a function of the deposited charge. These results are important ingredients to better understand the AD detector, to benchmark the corresponding simulations, and very importantly they served as a baseline for a similar device, the Forward Diffractive Detector (FDD), being currently built and that will be in operation in ALICE during the LHC Runs 3 and 4. \\ ( https://arxiv.org/abs/2006.14982 , 390kb) ------------------------------------------------------------------------------ \\ arXiv:2006.15052 (*cross-listing*) Date: Fri, 26 Jun 2020 15:30:57 GMT (2069kb,D) Title: Neutrino interaction classification with a convolutional neural network in the DUNE far detector Authors: DUNE Collaboration: B. Abi, R. Acciarri, M. A. Acero, G. Adamov, D. Adams, M. Adinolfi, Z. Ahmad, J. Ahmed, T. Alion, S. Alonso Monsalve, C. Alt, J. Anderson, C. Andreopoulos, M. P. Andrews, F. Andrianala, S. Andringa, A. Ankowski, M. Antonova, S. Antusch, A. Aranda-Fernandez, A. Ariga, L. O. Arnold, M. A. Arroyave, J. Asaadi, A. Aurisano, V. Aushev, D. Autiero, F. Azfar, H. Back, J. J. Back, C. Backhouse, P. Baesso, L. Bagby, R. Bajou, S. Balasubramanian, P. Baldi, B. Bambah, F. Barao, G. Barenboim, G. J. Barker, W. Barkhouse, C. Barnes, G. Barr, J. Barranco Monarca, N. Barros, J. L. Barrow, A. Bashyal, V. Basque, F. Bay, J. L. Bazo Alba, J. F. Beacom, E. Bechetoille, B. Behera, L. Bellantoni, G. Bellettini, V. Bellini, O. Beltramello, D. Belver, N. Benekos, F. Bento Neves, J. Berger, S. Berkman, et al. (913 additional authors not shown) Categories: physics.ins-det hep-ex Comments: 39 pages, 11 figures \\ The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure $CP$-violation in the neutrino sector as part of a wider physics program. A deep learning approach based on a convolutional neural network has been developed to provide highly efficient and pure selections of electron neutrino and muon neutrino charged-current interactions. The electron neutrino (antineutrino) selection efficiency peaks at 90% (94%) and exceeds 85% (90%) for reconstructed neutrino energies between 2-5 GeV. The muon neutrino (antineutrino) event selection is found to have a maximum efficiency of 96% (97%) and exceeds 90% (95%) efficiency for reconstructed neutrino energies above 2 GeV. When considering all electron neutrino and antineutrino interactions as signal, a selection purity of 90% is achieved. These event selections are critical to maximize the sensitivity of the experiment to $CP$-violating effects. \\ ( https://arxiv.org/abs/2006.15052 , 2069kb) ------------------------------------------------------------------------------ \\ arXiv:2006.15140 (*cross-listing*) Date: Fri, 26 Jun 2020 17:58:07 GMT (361kb,D) Title: Hydrogen portal to exotic radioactivity Authors: David McKeen, Maxim Pospelov, Nirmal Raj Categories: hep-ph astro-ph.HE hep-ex Comments: 4 pages + refs, 3 figures \\ We show that in a special class of dark sector models, the hydrogen atom can serve as a portal to new physics, through its decay occurring in abundant populations in the Sun and on Earth. The large fluxes of hydrogen decay daughter states can be detected via their decay or scattering. By constructing two models for either detection channel, we show that the recently reported excess in electron recoils at XENON1T could be explained by such signals in large regions of parameter space unconstrained by proton and hydrogen decay limits. \\ ( https://arxiv.org/abs/2006.15140 , 361kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1910.14398 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 00:00:44 GMT (371kb,D) Title: Jet-hadron correlations measured relative to the second order event plane in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV Authors: ALICE Collaboration Categories: nucl-ex hep-ex Comments: 30 pages, 7 captioned figures, 3 tables, authors from page 25, submitted to PRC, figures at http://alice-publications.web.cern.ch/node/5646 Report-no: CERN-EP-2019-244 Journal-ref: Phys. Rev. C 101 (2020) 064901 DOI: 10.1103/PhysRevC.101.064901 \\ ( https://arxiv.org/abs/1910.14398 , 371kb) ------------------------------------------------------------------------------ \\ arXiv:2004.01609 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 08:26:23 GMT (20kb) Title: Using HEP experiment workflows for the benchmarking and accounting of WLCG computing resources Authors: Andrea Valassi, Manfred Alef, Jean-Michel Barbet, Olga Datskova, Riccardo De Maria, Miguel Fontes Medeiros, Domenico Giordano, Costin Grigoras, Christopher Hollowell, Martina Javurkova, Viktor Khristenko, David Lange, Michele Michelotto, Lorenzo Rinaldi, Andrea Sciab\`a and Cas Van Der Laan Categories: cs.PF hep-ex physics.ins-det Comments: 9 pages, submitted to CHEP2019 proceedings in EPJ Web of Conferences; revised version addressing referee's comments ACM-class: K.6.2; D.2.8 \\ ( https://arxiv.org/abs/2004.01609 , 20kb) ------------------------------------------------------------------------------ \\ arXiv:2004.08969 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 17:39:59 GMT (671kb,D) Title: Detector control system for the CBM-TOF Authors: S. Dong, G.M. Huang, J. Fr\"uhauf, P.-A. Loizeau, I. Deppner, N. Herrmann, D. Wang Categories: physics.ins-det hep-ex Comments: This article is based on my RPC2020 meeting report, see https://agenda.infn.it/event/19942/contributions/108458/ \\ ( https://arxiv.org/abs/2004.08969 , 671kb) ------------------------------------------------------------------------------ \\ arXiv:2004.10563 replaced with revised version Thu, 25 Jun 2020 11:55:43 GMT (844kb,AD) Title: Measurement of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ angular distribution and the $\Lambda^0_b$ polarisation in $pp$ collisions Authors: LHCb collaboration: R. Aaij, C. Abell\'an Beteta, T. Ackernley, B. Adeva, M. Adinolfi, H. Afsharnia, C.A. Aidala, S. Aiola, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, G. Alkhazov, P. Alvarez Cartelle, A.A. Alves Jr, S. Amato, Y. Amhis, L. An, L. Anderlini, G. Andreassi, A. Andreianov, M. Andreotti, F. Archilli, A. Artamonov, M. Artuso, K. Arzymatov, E. Aslanides, M. Atzeni, B. Audurier, S. Bachmann, J.J. Back, S. Baker, V. Balagura, W. Baldini, J. Baptista Leite, R.J. Barlow, S. Barsuk, W. Barter, M. Bartolini, F. Baryshnikov, J.M. Basels, G. Bassi, V. Batozskaya, B. Batsukh, A. Battig, A. Bay, M. Becker, F. Bedeschi, I. Bediaga, A. Beiter, V. Belavin, S. Belin, V. Bellee, K. Belous, I. Belyaev, G. Bencivenni, E. Ben-Haim, S. Benson, A. Berezhnoy, R. Bernet, et al. (856 additional authors not shown) Categories: hep-ex Comments: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-005.html (LHCb public pages) Report-no: LHCb-PAPER-2020-005, CERN-EP-2020-051 Journal-ref: J. High Energ. Phys. 2020, 110 (2020) DOI: 10.1007/JHEP06(2020)110 \\ ( https://arxiv.org/abs/2004.10563 , 844kb) ------------------------------------------------------------------------------ \\ arXiv:2006.05437 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 11:11:43 GMT (200kb,D) Title: Unravelling the richness of dark sector by FASER$\nu$ Authors: Pouya Bakhti, Yasaman Farzan, Silvia Pascoli Categories: hep-ph hep-ex Comments: 14 pages, 4 figures \\ ( https://arxiv.org/abs/2006.05437 , 200kb) ------------------------------------------------------------------------------ \\ arXiv:2006.08239 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 17:59:41 GMT (2754kb) Title: Next Frontiers in Particle Physics Detectors: INSTR2020 Summary and a Look into the Future Authors: Maxim Titov Categories: physics.ins-det hep-ex Comments: 45 pages, 17 figures. This paper summarizes advances and recent trends in the instrumentation techniques for particle physics experiments, largely based on the presentations given at the International Conference "Instrumentation for Colliding Beam Physics" (INSTR-20), held at BINP Novosibirsk, Russia, from 24 to 28 February, 2020 \\ ( https://arxiv.org/abs/2006.08239 , 2754kb) ------------------------------------------------------------------------------ \\ arXiv:2006.08562 (*cross-listing*) replaced with revised version Wed, 24 Jun 2020 20:07:13 GMT (2582kb,D) Title: Recent Performance Studies of the GEM-based TPC Readout (DESY Module) Authors: Ties Behnke (1), Ralf Diener (1), Ulrich Einhaus (1 and 2), Uwe Kr\"amer (1 and 2), Paul Malek (1 and 2), Oliver Sch\"afer (1), Mengqing Wu (1) ((1) Deutsches Elektronen-Synchrotron DESY, (2) Universit\"at Hamburg) Categories: physics.ins-det hep-ex Comments: 15 pages, 12 figures, "Talk presented at the International Workshop on Future Linear Colliders (LCWS2019), Sendai, Japan, 28 October-1 November, 2019. C19-10-28." \\ ( https://arxiv.org/abs/2006.08562 , 2582kb) ------------------------------------------------------------------------------ \\ arXiv:2006.12033 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 09:12:17 GMT (60kb,D) Title: Excess of soft dielectrons and photons Authors: I.M. Dremin Categories: hep-ph astro-ph.HE hep-ex nucl-ex nucl-th Comments: 10 pages, 2 Figures \\ ( https://arxiv.org/abs/2006.12033 , 60kb) ------------------------------------------------------------------------------ \\ arXiv:2006.13278 replaced with revised version Thu, 25 Jun 2020 16:54:04 GMT (14kb,D) Title: XENON1T observes tritium Authors: Alan E. Robinson Categories: hep-ex astro-ph.CO hep-ph physics.ins-det Comments: Corrected equation 1. Typo corrections. Removed possibility that XENON1T doesn't contain a Hydrogen Removal Unit \\ ( https://arxiv.org/abs/2006.13278 , 14kb) ------------------------------------------------------------------------------ \\ arXiv:2001.02672 (*cross-listing*) replaced with revised version Fri, 26 Jun 2020 11:25:43 GMT (637kb,D) Title: Muon $g-2$ in Higgs-anomaly mediation Authors: Tsutomu T. Yanagida, Wen Yin, and Norimi Yokozaki Categories: hep-ph hep-ex Comments: 14 pages, 4 figures, 2 tables; v2: a model added in appendix, version accepted by JHEP \\ ( https://arxiv.org/abs/2001.02672 , 637kb) ------------------------------------------------------------------------------ \\ arXiv:2002.04038 (*cross-listing*) replaced with revised version Fri, 26 Jun 2020 17:38:19 GMT (677kb,D) Title: Co-SIMP Miracle Authors: Juri Smirnov and John F. Beacom Categories: hep-ph astro-ph.CO hep-ex Comments: Minor revisions for clarity, plus a new section on how our predictions can fit the XENON1T excess. Comments are welcome \\ ( https://arxiv.org/abs/2002.04038 , 677kb) ------------------------------------------------------------------------------ \\ arXiv:2003.02947 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 18:05:33 GMT (446kb) Title: Lepton Pair Production Through Two Photon Process in Heavy Ion Collisions Authors: Spencer Klein, Al Mueller, Bo-Wen Xiao, Feng Yuan Categories: hep-ph hep-ex nucl-ex nucl-th Comments: 21 pages, 13 figures; added more discussions on the generalized equivalent photon approximation and 3 new figures \\ ( https://arxiv.org/abs/2003.02947 , 446kb) ------------------------------------------------------------------------------ \\ arXiv:2005.05171 (*cross-listing*) replaced with revised version Fri, 26 Jun 2020 16:01:48 GMT (297kb,D) Title: On the two-loop radiative origin of the smallest neutrino mass and the associated Majorana CP phase Authors: Zhi-zhong Xing and Di Zhang Categories: hep-ph hep-ex Comments: 19 pages, 7 figures, 2 tables, the version accepted for publication in PLB \\ ( https://arxiv.org/abs/2005.05171 , 297kb) ------------------------------------------------------------------------------ \\ arXiv:2005.07285 (*cross-listing*) replaced with revised version Thu, 25 Jun 2020 20:35:05 GMT (2544kb,D) Title: Helicity at Small $x$: Oscillations Generated by Bringing Back the Quarks Authors: Yuri V. Kovchegov, Yossathorn Tawabutr Categories: hep-ph hep-ex nucl-ex nucl-th Comments: 20 pages, 10 figures \\ ( https://arxiv.org/abs/2005.07285 , 2544kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arxiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arxiv.org/help/