Latest in hep-ex

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Unfolding as Quantum AnnealingAug 22 2019High-energy physics is replete with hard computational problems and it is one of the areas where quantum computing could be used to speed up calculations. We present an implementation of likelihood-based regularized unfolding on a quantum computer. The ... More
Search for supersymmetry using Higgs boson to diphoton decays at $\sqrt{s}$ = 13 TeVAug 22 2019A search for supersymmetry (SUSY) is presented where at least one Higgs boson is produced and decays to two photons in the decay chains of pair-produced SUSY particles. Two complementary analysis strategies are pursued: one focused on strong SUSY production ... More
Constraining the Sea Quark Distributions Through W$^\pm$ Cross Section Ratio Measurements at STARAug 22 2019Over the past several years, parton distribution functions (PDFs) have become more precise. However there are still kinematic regions where more data are needed to help constrain global PDF extractions, such as the ratio of the sea quark distributions ... More
Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS experimentAug 22 2019A search for flavour-changing neutral current (FCNC) events via the coupling of a top quark, a photon, and an up or charm quark is presented using 81 fb$^{-1}$ of proton-proton collision data taken at a centre-of-mass energy of 13 TeV with the ATLAS detector ... More
Nucleon-antinucleon annihilation at LEARAug 22 2019This report is a historical review of the salient results in low energy antiproton-proton and antineutron-proton annihilation obtained at the Low Energy Antiproton Ring (LEAR), which was operated at CERN between 1983 and 1996. The intention is to provide ... More
Towards the meV limit of the effective neutrino mass in neutrinoless double-beta decaysAug 22 2019In this paper, we emphasize why it is important for future neutrinoless double-beta ($0\nu\beta\beta$) decay experiments to reach the sensitivity to the effective neutrino mass $|m^{}_{\beta\beta}| \approx 1~{\rm meV}$. Assuming such a sensitivity and ... More
CIMBA: fast Monte Carlo generation using cubic interpolationAug 22 2019Monte Carlo generation of high energy particle collisions is a critical tool for both theoretical and experimental particle physics, connecting perturbative calculations to phenomenological models, and theory predictions to full detector simulation. The ... More
First-forbidden transitions in the reactor anomalyAug 22 2019We describe here microscopic calculations performed on the dominant forbidden transitions in reactor antineutrino spectra above 4 MeV using the nuclear shell model. By taking into account Coulomb corrections in the most complete way, we calculate the ... More
Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detectorAug 22 2019A search for the electroweak production of charginos and sleptons decaying into final states with two electrons or muons is presented. The analysis is based on 139 fb$^{-1}$ of proton-proton collisions recorded by the ATLAS detector at the Large Hadron ... More
Operation of ILC250 at the Z-poleAug 22 2019ILC (International Linear Collider) has been under consideration as the next global project of particle physics. It's Technical Design Report, published in 2013, described the accelerator for the center-of-mass energy above 200GeV. Operation of ILC at ... More
Nuclear Isotope Production by Ordinary Muon Capture ReactionAug 22 2019Muon capture isotope production (MuCIP) using negative ordinary muon capture reactions (OMC) is used to efficiently produce various kinds of nuclear isotopes for both fundamental and applied science studies. The large capture probability of muon into ... More
Large Area Photo-Detection System using 3-inch PMTs for the Hyper-Kamiokande Outer DetectorAug 21 2019Hyper-Kamiokande, scheduled to begin construction as soon as 2020, is a next generation underground water Cherenkov detector, based on the highly successful Super-Kamiokande experiment. It will serve as a far detector, 295 km away, of a long baseline ... More
Higgs lepton flavor violating decays in Two Higgs Doublet ModelsAug 21 2019The discovery of a non-zero rate for a lepton flavor violating decay mode of the Higgs boson would definitely be an indication of New Physics. We review the prospects for such signal in Two Higgs Doublet Models, in particular for Higgs boson decays into ... More
The camera system for the IceCube UpgradeAug 21 2019The IceCube Neutrino Observatory is a cubic kilometer volume neutrino detector installed in the Antarctic at the geographic South Pole. Neutrinos are detected through the observation of Cherenkov light from charged relativistic particles generated in ... More
Prospects of Earth-skimming neutrino detection with HAWCAug 20 2019Searches for Earth-skimming neutrinos using volcanoes have not yet been achieved, but it is a promising technique for the detection of neutrinos above 1 PeV. The HAWC observatory is located in the vicinity of the highest mountain in Mexico, the Pico de ... More
Magnetic fields in heavy ion collisions: flow and charge transportAug 20 2019At the earliest times after a heavy-ion collision, the magnetic field created by the spectator nucleons will generate an extremely strong, albeit rapidly decreasing in time, magnetic field. The impact of this magnetic field may have detectable consequences, ... More
Quest for new physics using astrophysical neutrino flavor in IceCubeAug 20 2019We have detected astrophysical neutrinos in IceCube that can be used to probe astrophysical sources at ultra high scales. Here we report a search for anomalous space time effects using astrophysical neutrino flavor data in IceCube. New effective operators ... More
Quest for new physics using astrophysical neutrino flavor in IceCubeAug 20 2019Aug 22 2019We have detected astrophysical neutrinos in IceCube that can be used to probe astrophysical sources at ultra high scales. Here we report a search for anomalous space time effects using astrophysical neutrino flavor data in IceCube. New effective operators ... More
Exotic decays of top partners: mind the search gapAug 20 2019Many standard model extensions, including composite Goldstone Higgs models, predict vector-like fermionic top-partners at the TeV scale. The intensive search programmes by ATLAS and CMS focus on decays into a 3$^{\rm rd}$ generation quark and an electroweak ... More
Long distance effects in inclusive rare $B$ decays and phenomenology of $\bar{B}\to X_d \ell^+\ell^-$Aug 20 2019Rare inclusive $B$ decays such as $\bar{B}\to X_{s(d)} \ell^+\ell^-$ are interesting probes for physics beyond the Standard Model. Due to the complementarity to their exclusive counterparts, they might shed light on the anomalies currently seen in exclusive ... More
Search for $B^- \to Λ\bar p ν\barν$ with the BABAR experimentAug 20 2019We search for the rare flavor-changing neutral current process $B^- \to \Lambda {\overline p} \nu{\overline{\nu}}$ using data from the BABAR experiment. A total of 424 fb$^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy of the ... More
Electroweak Precision Tests of the SMAug 20 2019A global survey of weak mixing angle measurements at low and high energies is presented. Then I will discuss theoretical uncertainties in precision observables with special emphasis on their correlations. The important role of vacuum polarization in global ... More
Global fits of the SM parametersAug 20 2019I present a global survey of weak mixing angle measurements and other precision experiments and discuss the issue of correlations of the theoretical uncertainties in precision observables. Hadronic vacuum polarization effects complicate global fits in ... More
Summary of Working Group 5: Physics with Heavy FlavoursAug 20 2019We present a summary of heavy-flavour physics at the the time of the DIS2019 conference. This summary is based upon the relevant plenary and parallel talks presented at the workshop. The summary is divided into four broad areas: (1) spectroscopy, (2) ... More
Measurements of top-quark pair differential and double-differential cross-sections in the $\ell$+jets channel with $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detectorAug 20 2019Single- and double-differential cross-section measurements are presented for the production of top-quark pairs, in the lepton + jets channel at particle and parton level. Two topologies, resolved and boosted, are considered and the results are presented ... More
Dark Matter at the Intensity Frontier: the new MESA electron accelerator facilityAug 20 2019Dark Matter is being searched with a variety of methods, each of which tackles this challenge focusing on different kinds of particles, masses and couplings. Here we describe Dark Matter searches conducted with accelerators and fixed targets. In particular, ... More
Single top quark and rare top quark production at ATLAS and CMSAug 20 2019The latest results from ATLAS and CMS on single top quark production and rare production channels of top quarks at the LHC are presented.
Search for dark matter with metastable mediators with the IceCube observatoryAug 20 2019The IceCube neutrino observatory is a 3D array of photodetectors installed in the Antarctic ice. It consists of 5,160 photomultiplier-tubes spread among 86 vertical strings making a total detector volume of more than a cubic kilometer. It detects neutrinos ... More
Neutrino Detectors as Tools for Nuclear SecurityAug 20 2019Aug 21 2019For over 40 years, physicists have considered possible uses for neutrino detectors in nuclear nonproliferation, arms control, and fissile materials security. Neutrinos are an attractive fission signature because they readily pass through matter. The same ... More
Measurement of the high-energy all-flavor neutrino-nucleon cross section with IceCubeAug 19 2019The flux of high-energy neutrinos passing through the Earth is attenuated due to their interactions with matter. Their transmission probability is modulated by the neutrino interaction cross section and affects the arrival flux at the IceCube Neutrino ... More
Neutrino mass ordering obscured by non-standard interactionsAug 19 2019The recent data of the two long baseline experiments NO$\nu$A and T2K, interpreted in the standard 3-flavor scenario, provide a $\sim2.4\sigma$ indication in favor of the normal neutrino mass ordering. We show that such an indication is completely washed ... More
MiNNLO$_{\text{PS}}$: A new method to match NNLO QCD to parton showersAug 19 2019We present a novel method to combine QCD calculations at next-to-next-to-leading order (NNLO) with parton shower (PS) simulations, that can be applied to the production of heavy systems in hadronic collisions, such as colour singlets or a $t\bar{t}$ pair. ... More
Direct Deflection of Particle Dark MatterAug 19 2019We propose a new strategy to directly detect light particle dark matter that has long-ranged interactions with ordinary matter. The approach involves distorting the local flow of dark matter with time-varying fields and measuring these distortions with ... More
Jet charge modification in dense QCD matterAug 19 2019Jet production and jet substructure modification in heavy-ion collisions have played an essential role in revealing the in-medium evolution of parton showers and the determination of the properties of strongly-interacting matter under extreme conditions. ... More
Neutrino Fluence from Gamma-Ray Bursts: Off-Axis View of Structured JetsAug 19 2019We investigate the expected high-energy neutrino fluence from internal shocks produced in the relativistic outflow of gamma-ray bursts. Previous model predictions have primarily focussed on on-axis observations of uniform jets. Here we present a generalization ... More
Charged particle spectra from $μ^{-}$ capture on AlAug 19 2019Published data on the emission of charged particles following nuclear muon capture are extremely limited. In addition to its interest as a probe of the nuclear response, these data are important for the design of some current searches for lepton flavor ... More
Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenonAug 19 2019As noble liquid time projection chambers grow in size their high voltage requirements increase, and detailed, reproducible studies of dielectric breakdown and the onset of electroluminescence are needed to inform their design. The Xenon Breakdown Apparatus ... More
Exploring the scattering of vector bosons at LHCbAug 19 2019In this letter, I propose a strategy to measure vector-boson scattering (VBS) at the LHCb experiment. The typical VBS topology features two energetic back-to-back jets with large rapidities and two gauge bosons produced centrally. Such a topology is well ... More
Search for non-resonant Higgs boson pair production in the $bb\ellν\ellν$ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s} = 13$ TeVAug 19 2019A search for non-resonant Higgs boson pair production, as predicted by the Standard Model, is presented, where one of the Higgs bosons decays via the $H\rightarrow bb$ channel and the other via one of the $H \rightarrow WW^*/ZZ^*/\tau\tau$ channels. The ... More
Towards a theory of baryon resonancesAug 19 2019In this talk, I discuss methods that allow for a systematic and model-independent calculation of the hadron spectrum. These are lattice QCD and/or its corresponding Effective Field Theories. Assorted results are shown and I take the opportunity to discuss ... More
Search for production of four top quarks in final states with same-sign or multiple leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeVAug 18 2019The standard model (SM) production of four top quarks ($\mathrm{t\bar{t}t\bar{t}}$) in proton-proton collision is studied by the CMS Collaboration. The data sample, collected during the 2016-2018 data taking of the LHC, corresponds to an integrated luminosity ... More
Search for Vector-mediated Dark Matter at the LHC with Proton TaggingAug 18 2019We investigate production of fermionic dark matter $\chi$ via $pp \to p\gamma p \to p j \chi \bar{\chi}X$ mediated by a leptophobic spin-1 particle, where one of the protons remains intact and is tagged by forward detectors. We find that the masses of ... More
Precision measurement of the Z boson to electron neutrino coupling at the future circular collidersAug 17 2019At the high luminosity electron-positron circular colliders like FCC-ee in CERN and CEPC in China it will possible to measure very precisely $e^+e^-\to Z\gamma$ process with subsequent Z decay into particles invisible in the detector, that is into three ... More
Quantum Brownian motion of a heavy quark pair in the quark-gluon plasmaAug 17 2019In this paper we study the real-time evolution of heavy quarkonium in the quark-gluon plasma (QGP) on the basis of the open quantum systems approach. In particular, we shed light on how quantum dissipation affects the dynamics of the relative motion of ... More
Triple GEM performance in magnetic fieldAug 17 2019Performance of triple GEM prototypes in strong magnetic field has been evaluated bymeans of a muon beam at the H4 line of the SPS test area at CERN. Data have been reconstructedand analyzed offline with two reconstruction methods: the charge centroid ... More
Experimental determination of the isospin of $Λ_c(2765)^+/Σ_c(2765)^+$Aug 17 2019We report an experimental determination of the isospin of $\Lambda_c(2765)^+/\Sigma_c(2765)^+$ using 980 fb$^{-1}$ data in the $e^+e^-$ annihilation around $\sqrt{s} = 10.6$ GeV collected by the Belle detector located at the KEKB collider. The isospin ... More
Hybrid Color Glass Condensate and hydrodynamic description of the Relativistic Heavy Ion Collider small system scanAug 17 2019Multi-particle correlation observables in the Relativistic Heavy Ion Collider small system scan are computed in a framework that contains both initial state momentum anisotropies from the Color Glass Condensate effective theory and final state hydrodynamic ... More
Measured Effectiveness of Deep N-well Substrate Isolation in a 65nm Pixel Readout Chip PrototypeAug 16 2019The same charge sensitive preamplifier and discriminator circuit with different isolation strategies has been tested to compare the isolation of both analog and digital circuits from the substrate of a 65nm bulk CMOS process to the isolation of only digital ... More
Measurement of neutron and proton analyzing powers on $C$, $CH$, $CH_2$ and $Cu$ targets in the momentum region 3-4.2 GeV/cAug 16 2019The analyzing powers for proton elastic scattering ($\vec p A\to pX$) and neutron charge exchange ($\vec n A\to p X$) reactions on nuclei have been measured on $ C$, $CH$, $CH_2$ and $Cu$ targets at incident neutron momenta 3.0 - 4.2 GeV/c by detecting ... More
The Heavy Gluino in Natural No-Scale $\cal{F}$-$SU$(5)Aug 16 2019In light of recent 80-137 $\rm{fb}^{-1}$ results at the LHC Run 2 establishing a lower gluino mass limit of 2.25 TeV, we revisit the supersymmetric GUT model Flipped $SU$(5) with extra vector-like particles, known as $\cal{F}$-$SU$(5), with vanishing ... More
Nucleon's energy-momentum tensor form factors in light-cone QCDAug 16 2019We use the energy-momentum tensor (EMT) current to compute the EMT form factors of the nucleon in the framework of the light cone QCD sum rule formalism. In the calculations, we employ the most general form of the nucleon's interpolating field and use ... More
QCD Axion on Hilltop by Phase Shift of $π$Aug 16 2019We show that the initial misalignment angle of the QCD axion (or axion-like particles) can be set very close to $\pi$, if the QCD axion has a mixing with another heavy axion which induces the phase shift $\approx \pi$ after inflation. In the simplest ... More
Neutrino, Electroweak and Nuclear Physics from COHERENT Elastic Neutrino-Nucleus Scattering with Refined Quenching FactorAug 16 2019We present an updated analysis of the coherent neutrino-nucleus elastic scattering data of the COHERENT experiment taking into account the refined quenching factor published recently in \url{arXiv:1907.04828}. Through a fit of the COHERENT time-integrated ... More
The determination capability of potential neutrinos from gravitational wave sources and contributions of extra detector at the future reactor neutrino experimentAug 16 2019After several gravitational wave transients were discovered since 2015, studying neutrino signals coincident with the gravitational wave events now becomes an important mission for the existing neutrino experiments. Unfortunately, no candidate neutrinos ... More
Recent Results on Charmonia- and Bottomonia-like Particles at BelleAug 16 2019The large data sample accumulated by the Belle experiment at KEKB asymmetric energy $e^+ e^-$ collider provides opportunities to study charmonia (bottomonia) and charmonium-like (bottomonium-like) exotic particles. In this review, we report recent results ... More
Measurement of the 3He Spin-Structure Functions and of Neutron (3He) Spin-Dependent Sum Rules at 0.035<Q^2<0.24 GeV^2Aug 15 2019The spin-structure functions g_1 and g_2, and the spin-dependent partial cross-section \sigma_{TT} have been extracted from the polarized cross-sections differences, \Delta \sigma_{||}(\nu,Q^2) and \Delta \sigma_{\perp}(\nu,Q^2) measured for the 3He(e,e')X ... More
Effective field theory and scalar extensions of the top quark sectorAug 15 2019Effective field theory (EFT) approaches are widely used at the LHC, such that it is important to study their validity, and ease of matching to specific new physics models. In this paper, we consider a generic extension of the SM in which a top quark couples ... More
Beam Asymmetry $\mathbfΣ$ for the Photoproduction of $\mathbfη$ and $\mathbf{η^{\prime}}$ Mesons at $\mathbf{E_γ=8.8}$GeVAug 15 2019We report on the measurement of the beam asymmetry $\Sigma$ for the reactions $\vec{\gamma}p\rightarrow p\eta$ and $\vec{\gamma}p \rightarrow p\eta^{\prime}$ from the GlueX experiment, using an 8.2--8.8 GeV linearly polarized tagged photon beam incident ... More
Searching for Time-Dependent Neutrino Emission from Blazars with IceCubeAug 15 2019In 2017, IceCube detected a high energy neutrino in coincidence with the blazar TXS 0506+056. In a follow up analysis of archival data, evidence for previous neutrino emission from the blazar during 2014-15 was found. In this analysis, we investigate ... More
Development of a UV-transparent Lens Array for Enlarging the Effective Area of Multichannel SiPMsAug 15 2019We developed a UV-transparent lens array that can increase the photon detection efficiency of a silicon photomultiplier (SiPM) array comprising of 64 pixels ($3\times3$ mm$^2$ each) and 0.2-mm gaps. Through the plano-convex spherical lens on each $3.2\times3.2$ ... More
First Double Cascade Tau Neutrino Candidates in IceCube and a New Measurement of the Flavor CompositionAug 15 2019The IceCube Neutrino Observatory at the South Pole, which detects Cherenkov light from charged particles produced in neutrino interactions, firmly established the existence of an astrophysical high-energy neutrino component. The expected neutrino flavor ... More
Top-quark properties at ATLASAug 15 2019Properties of the top-quark are presented, with emphasis on the most recent ATLAS measurements of the mass and $t\bar{t}$ spin correlations, obtained with proton-proton collision data collected at the Large Hadron Collider. Normalised differential distributions ... More
A new parton model for the soft interactions at high energies: two channel approximationAug 15 2019In this paper we achieve a fairly good description of four experimental observables: $\sigma_{\rm tot}$,$\sigma_{\rm el}$, $B_{\rm el}$ and the single diffraction cross sections, for proton-proton scattering, in a two channel model for the structure of ... More
Ab Initio Treatment of Collective Correlations and the Neutrinoless Double Beta Decay of $^{48}$CaAug 15 2019Working with Hamiltonians from chiral effective field theory, we develop a novel framework for arbitrary deformed medium-mass nuclei by combining the in-medium similarity renormalization group with the generator coordinate method, which we use to build ... More
Probing $ΩΩ$ and $pΩ$ dibaryons with femtoscopic correlations in relativistic heavy-ion collisionsAug 15 2019The momentum correlation functions of baryon pairs, which reflects the baryon-baryon interaction at low energies, are investigated for multi-strangeness pairs ($\Omega\Omega$ and $N\Omega$) produced in relativistic heavy-ion collisions. We calculate the ... More
Improved measurements of the absolute branching fractions of the inclusive decays $D^{+(0)}\toφX$Aug 15 2019Aug 20 2019By analyzing 2.93 fb$^{-1}$ of $e^+e^-$ annihilation data taken at the center-of-mass energy $\sqrt s=$ 3.773 GeV with the BESIII detector, we determine the branching fractions of the inclusive decays $D^+\to\phi X$ and $D^0\to\phi X$ to be $(1.135\pm0.034\pm0.031)\%$ ... More
Improved measurements of the absolute branching fractions of the inclusive decays $D^{+(0)}\toφX$Aug 15 2019By analyzing 2.93 fb$^{-1}$ of $e^+e^-$ annihilation data taken at the center-of-mass energy $\sqrt s=$ 3.773 GeV with the BESIII detector, we determine the branching fractions of the inclusive decays $D^+\to\phi X$ and $D^0\to\phi X$ to be {\Dpbf} and ... More
Further searches of the Higgs scalar sector at the ESSAug 14 2019Recent decades have witnessed remarkable confirmations of the Standard Model (SM) describing the Electro-Weak and Strong Interactions. The Higgs boson was observed at CERN-LHC at 5 TeV and 13 TeV. The HL-LHC, a major luminosity upgrade has been recently ... More
JEDI-net: a jet identification algorithm based on interaction networksAug 14 2019We investigate the performance of a jet identification algorithm based on interaction networks (JEDI-net) to identify all-hadronic decays of high-momentum heavy particles produced at the LHC and distinguish them from ordinary jets originating from the ... More
Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and $pp$ collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with the ATLAS detectorAug 14 2019Studies of the fragmentation of jets into charged particles in heavy-ion collisions can provide information about the mechanism of jet-quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. This paper presents a ... More
Polarization fraction measurement in ZZ scattering using deep learningAug 14 2019Measuring longitudinally polarized vector boson scattering in the ZZ channel is a promising way to investigate unitarity restoration with the Higgs mechanism and to search for possible new physics. We investigated several deep neural network structures ... More
SkyLLH -- A generalized Python-based tool for log-likelihood analyses in multi-messenger astronomyAug 14 2019Common analysis techniques in multi-messenger astronomy involve hypothesis tests with unbinned log-likelihood (LLH) functions using data recorded in celestial coordinates to identify sources of high-energy cosmic particles in the Universe. We present ... More
New physics and tau $g-2$ using LHC heavy ion collisionsAug 14 2019The anomalous magnetic moment of the tau lepton $a_\tau = (g_\tau -2)/2$ strikingly evades measurement, but is highly sensitive to new physics such as compositeness or supersymmetry. We propose using ultraperipheral heavy ion collisions at the LHC to ... More
J-PARC Neutrino Beamline Upgrade Technical Design ReportAug 14 2019In this document, technical details of the upgrade plan of the J-PARC neutrino beamline for the extension of the T2K experiment are described. T2K has proposed to accumulate data corresponding to $2\times{}10^{22}$ protons-on-target in the next decade, ... More
Nanodiamond photocathodes for MPGD-based single photon detectors at future EICAug 14 2019The design of a Ring Imaging CHerenkov (RICH) detector for the identification of high momentum particles at the future Electron Ion Collider (EIC) is extremely challenging by using current technology. Compact collider setups impose to construct RICH with ... More
A modular mini-pad photon detector prototype for RICH application at the Electron Ion ColliderAug 14 2019Experiments at the future Electron Ion Collider require excellent hadron identification in a broad momentum range, in harsh conditions. A RICH capable to fulfill the PID requirements of the EIC could use MPGD-based photon detectors with solid photocathodes ... More
The mass splitting among the isospin multiplets of light vector mesonsAug 14 2019By including the strong isospin symmetry breaking effects and the electromagnetic contributions between the pseudoscalar mesons, we calculate the phase shifts of the $P$-wave $\pi\pi$ and $K\pi$ scattering up to $\mathcal{O}(p^4)$ in the framework of ... More
Hadronization using the Wigner function approach for a multiphase transport modelAug 14 2019In the string melting version of a multiphase transport model, the hadronization algorithm has been improved by favoring parton combinations close in not only coordinate space but also momentum space. Formation probabilities of mesons, baryons, and antibaryons ... More
Nucleon-to-Resonance Form Factors at Large Photon VirtualitiesAug 14 2019We present a unified description of elastic and transition form factors involving the nucleon and its resonances; in particular, the $N(1440)$, $\Delta(1232)$ and $\Delta(1600)$. We compare predictions made using a framework built upon a Faddeev equation ... More
Hyperon electromagnetic timelike elastic form factors at large $q^2$Aug 13 2019We present estimates of the hyperon elastic form factors for the baryon octet and the $\Omega^-$ baryon for large four-momentum transfer squared, $q^2$, in the timelike region ($q^2>0$). Experimentally, those form factors can be extracted from the $e^+ ... More
Exhaustive Model Selection in $b \to s \ell \ell$ Decays: Pitting Cross-Validation against AIC$_c$Aug 13 2019In the light of recent data, we study the new physics effects in the exclusive $b \to s \ell^+\ell^-$ decays from a model independent perspective. Different combinations of the dimension six effective operators along with their respective Wilson coefficients ... More
Dark CP Violation and Gauged Lepton/Baryon Number for Electroweak BaryogenesisAug 13 2019We explore the generation of the baryon asymmetry in an extension of the Standard Model where the lepton number is promoted to a $U(1)_\ell$ gauge symmetry with an associated $Z^\prime$ gauge boson. This is based on a novel electroweak baryogenesis mechanism ... More
Ultralight dark matter detection with mechanical quantum sensorsAug 13 2019We consider the use of quantum-limited mechanical force sensors to detect ultralight (sub-meV) dark matter candidates which are weakly coupled to the standard model. We emphasize the scalable nature of an array of sensors, which can be used to reject ... More
Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentumAug 13 2019Results are reported from a search for supersymmetric particles in the final state with multiple jets and large missing transverse momentum. The search uses a sample of proton-proton collisions at $\sqrt{s}=$ 13 TeV collected with the CMS detector in ... More
News on the CLIC physics potentialAug 13 2019The Compact Linear Collider (CLIC) is a proposed TeV-scale high-luminosity electron-positron collider. For an optimal exploitation of its physics potential, CLIC is foreseen to be built and operated in three stages, with centre-of-mass energies ranging ... More
Model-independent method for measuring the angular coefficients of $B^0 \to D^{*-} τ^+ ν_τ$ decaysAug 13 2019Reconstruction of the $B^0 \to D^{*-} \tau^+ \nu_{\tau}$ angular distribution is complicated by the strongly-biasing effect of losing the neutrino information from both the $B$ and $\tau$ decays. In this work, a novel method for making unbiased measurements ... More
Model-independent method for measuring the angular coefficients of $B^0 \to D^{*-} τ^+ ν_τ$ decaysAug 13 2019Aug 18 2019Reconstruction of the $B^0 \to D^{*-} \tau^+ \nu_{\tau}$ angular distribution is complicated by the strongly-biasing effect of losing the neutrino information from both the $B$ and $\tau$ decays. In this work, a novel method for making unbiased measurements ... More
Light scalar production from Higgs bosons and FASER 2Aug 13 2019The most general renormalizable interaction between the Higgs sector and a new gauge-singlet scalar $S$ is governed by two interaction terms: cubic and quartic. The quartic interaction is only loosely constrained by invisible Higgs decays. Given current ... More
Measurement of $φ$ meson production in p+p interactions at 40, 80 and 158 GeV/c with the NA61/SHINE spectrometer at the CERN SPSAug 13 2019Aug 17 2019Results on $\phi$ meson production in inelastic p+p collisions at CERN SPS energies are presented. They are derived from data collected by the NA61/SHINE fixed target experiment, by means of invariant mass spectra fits in the $\phi \to K^+K^-$ decay channel. ... More
Measurement of $φ$ meson production in p+p interactions at 40, 80 and 158 GeV/c with the NA61/SHINE spectrometer at the CERN SPSAug 13 2019Results on $\phi$ meson production in inelastic p+p collisions at CERN SPS energies are presented. They are derived from data collected by the NA61/SHINE fixed target experiment, by means of invariant mass spectra fits in the $\phi \to K^+K^-$ decay channel. ... More
Study of Particle Multiplicity of Cosmic Ray Events using 2m$\times$2m Resistive Plate Chamber Stack at IICHEP-MaduraiAug 13 2019An experimental setup consisting of 12 layers of glass Resistive Plate Chambers (RPCs) of size 2m$\times$2m has been built at IICHEP-Madurai to study the long term performance and stability of RPCs produced on large scale in Industry. In this study, the ... More
Hidden charm pentaquarks with color-octet substructure in QCD Sum RulesAug 13 2019We study the hidden-charm pentaquark states $udsc\bar{c}$ with spins 1/2, 3/2, and 5/2 within the QCD sum rules approach. First, we construct the currents for the particular configuration of pentaquark states, that consist of the flavor singlet three-quark ... More
Event multiplicity, transverse momentum and energy dependence of charged particle production, and system thermodynamics in $pp$ collisions at the Large Hadron ColliderAug 12 2019In the present work, we study the recent collision energy and multiplicity dependence of the charged particle transverse momentum spectra as measured by the ALICE collaboration in $pp$ collisions at $\sqrt{s}$ = 5.02 and 13 TeV using the non-extensive ... More
Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experimentAug 12 2019Liquid xenon (LXe) is employed in a number of current and future detectors for rare event searches. We use the EXO-200 experimental data to measure the absolute scintillation and ionization yields generated by $\gamma$ interactions from $^{228}$Th (2615 ... More
F2F, a model-independent method to determine the mass and width of a particle in the presence of interferenceAug 12 2019It is generally believed that any particle to be discovered will have a TeV-order mass. Given its great mass, it must have a large decay width. Therefore, the interference effect will be very common if they and the Standard-Model (SM) particles contribute ... More
Constraining new physics from Higgs measurements with Lilith: update to LHC Run 2 resultsAug 11 2019Lilith is a public Python library for constraining new physics from Higgs signal strength measurements. We here present version 2.0 of Lilith together with an updated XML database which includes the current ATLAS and CMS Run 2 Higgs results for 36/fb. ... More
Light particle and quark chemical potentials from negatively to positively charged particle yield ratios corrected by removing strong and weak decaysAug 11 2019The yield ratios of negatively to positively charged pions ($\pi^-/\pi^+$), negatively to positively charged kaons ($K^-/K^+$), and anti-protons to protons ($\bar p/p$) produced in mid-rapidity interval in central gold-gold (Au-Au) collisions, central ... More
Form factors of $V'\to V''$ transition within the light-front quark modelsAug 10 2019In this paper, we calculate the matrix element and form factors of vector-to-vector ($V'\to V'$) transition within the standard light-front~(SLF) and covariant light-front~(CLF) quark models~(QMs), and investigate the self-consistency and Lorentz covariance ... More
Bulk Properties of the System Formed in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 14.5 GeVAug 09 2019We report systematic measurements of bulk properties of the system created in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 14.5 GeV recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC).The transverse momentum spectra of $\pi^{\pm}$, ... More
First direct detection constraint on mirror dark matter kinetic mixing using LUX 2013 dataAug 09 2019We present the results of a direct detection search for mirror dark matter interactions, using data collected from the Large Underground Xenon experiment during 2013, with an exposure of 95 live-days $\times$ 118 kg. Here, the calculations of the mirror ... More