Latest in nucl-ex

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Nuclear dependence of the transverse single-spin asymmetry in the production of charged hadrons at forward rapidity in polarized $p+p$, $p+$Al, and $p+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeVMar 18 2019We report on the nuclear dependence of transverse single-spin asymmetries (TSSAs) in the production of positively-charged hadrons in polarized $p^{\uparrow}+p$, $p^{\uparrow}+$Al and $p^{\uparrow}+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The measurements ... More
High-resolution spectroscopy of gaseous $^\mathrm{83m}$Kr conversion electrons with the KATRIN experimentMar 15 2019In this work, we present the first spectroscopic measurements of conversion electrons originating from the decay of metastable gaseous $^\mathrm{83m}$Kr with the Karlsruhe Tritium Neutrino (KATRIN) experiment. The results obtained in this calibration ... More
Relating eccentricity fluctuations to density fluctuations in heavy-ion collisionsMar 15 2019The magnitude of anisotropic flow in a nucleus-nucleus collision is determined by the energy density field, $\rho(x,y,z)$, created right after the collision occurs. Specifically, elliptic flow, $v_2$, and triangular flow, $v_3$, are proportional to the ... More
Search for dark photon, axion-like particles, dark scalar, or light dark matter in Compton-like processesMar 14 2019We propose a novel way to search for the dark photon ($A'$), the axion-like pseudo-scalar ($a$), the dark scalar ($\phi$), and the light dark matter ($\chi$) in the Compton-like processes, $\gamma + e^- \rightarrow A'/a/\phi + e^-$ with $A'/a/\phi$ decaying ... More
Measurement of $\rm p\overlineΛ\oplus\overline{p}Λ$ and $Λ\overlineΛ$ interactions with femtoscopic correlations in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV and $\sqrt{s_{\rm NN}} = 5.02$ TeVMar 14 2019Femtoscopic correlation functions were measured for $\rm p\overline{p}$, $\rm p\overline{\Lambda}\oplus\overline{p}\Lambda$, and $\Lambda\overline{\Lambda}$ pairs, as a function of collision centrality, in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ ... More
Discovery potential of multi-ton xenon detectors in neutrino electromagnetic propertiesMar 14 2019Next-generation xenon detectors with multi-ton-year exposure are powerful direct probes of dark matter candidates, in particular the favorite weakly-interacting massive particles. Coupled with the features of low thresholds and backgrounds, they are also ... More
All the Fun of the FAIR: Fundamental physics at the Facility for Antiproton and Ion ResearchMar 13 2019The Facility for Antiproton and Ion Research (FAIR) will be the accelerator-based flagship research facility in many basic sciences and their applications in Europe for the coming decades. FAIR will open up unprecedented research opportunities in hadron ... More
Experimental studies at low $Q^2$ of the spin structure of the nucleon at Jefferson LabMar 13 2019Mar 15 2019We summarize the experimental program of Jefferson Lab that studies the nucleon spin structure at low $Q^2$. This program completes the precise experimental mapping of the nucleon spin structure functions $g_1(\nu, Q^2)$ and $g_2(\nu, Q^2)$ and their ... More
Nucleon spin structure studies at Jefferson LabMar 13 2019We summarize the experimental program of Jefferson Lab that studies the nucleon spin structure at low $Q^2$. This program completes the precise experimental mapping of the nucleon spin structure functions $g_1(\nu, Q^2)$ and $g_2(\nu, Q^2)$ and their ... More
Estimates of hyperon polarization in heavy-ion collisions at collision energies $\sqrt{s_{NN}}=$ 4--40 GeVMar 13 2019Global polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons in Au+Au collisions at collision energies $\sqrt{s_{NN}}=$ 4-40 GeV in the midrapidity region and total polarization, i.e. averaged over all rapidities, are studied within the scope of the ... More
Estimates of hyperon polarization in heavy-ion collisions at collision energies $\sqrt{s_{NN}}=$ 4--40 GeVMar 13 2019Mar 18 2019Global polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons in Au+Au collisions at collision energies $\sqrt{s_{NN}}=$ 4-40 GeV in the midrapidity region and total polarization, i.e. averaged over all rapidities, are studied within the scope of the ... More
High Precision Measurement of Compton Scattering in the 5 GeV regionMar 13 2019Mar 15 2019The cross section of atomic electron Compton scattering $\gamma + e \rightarrow \gamma^\prime + e^\prime $ was measured in the 4.40--5.475 GeV photon beam energy region by the {\em PrimEx} collaboration at Jefferson Lab with an accuracy of 2\% and less. ... More
High Precision Measurement of Compton Scattering in the 5 GeV regionMar 13 2019The cross section of atomic electron Compton scattering $\gamma + e \rightarrow \gamma^\prime + e^\prime $ was measured in the 4.40--5.475 GeV photon beam energy region by the {\em PrimEx} collaboration at Jefferson Lab with an accuracy of 2\% and less. ... More
Opportunities for Nuclear Physics & Quantum Information ScienceMar 13 2019This whitepaper is an outcome of the workshop Intersections between Nuclear Physics and Quantum Information held at Argonne National Laboratory on 28-30 March 2018 [www.phy.anl.gov/npqi2018/]. The workshop brought together 116 national and international ... More
Collision energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton and net-kaon multiplicity distributions in Au+Au collisionsMar 13 2019Mar 16 2019We report the first measurements of a complete second-order cumulant matrix of net-charge, net-proton and net-kaon multiplicity distributions for the first phase of the beam energy scan program at RHIC. This includes the centrality and, for the first ... More
Collision energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton and net-kaon multiplicity distributions in Au+Au collisionsMar 13 2019We report the first measurements of a complete second-order cumulant matrix of net-charge, net-proton and net-kaon multiplicity distributions for the first phase of the beam energy scan program at RHIC. This includes the centrality and, for the first ... More
Exploring the influence of bulk viscosity of QCD on dilepton tomographyMar 12 2019Signals of collective behavior originating from hadronic and electromagnetic radiation in heavy-ion collisions has been widely used to study the properties of the the Quark-Gluon Plasma (QGP). Indeed this collectivity, as measured by anisotropic flow ... More
The $ss \bar s \bar s$ tetraquark states and the newly observed structure $X(2239)$ by BESIII CollaborationMar 12 2019We investigate the mass spectrum of the $ss \bar s \bar s$ tetraquark states within the relativized quark model. By solving the Schr\"{o}dinger-like equation with the relativized potential, the masses of the $S-$ and $P-$wave $ss \bar s \bar s$ tetraquarks ... More
Potential model for nuclear astrophysical fusion reactions with a square-well potentialMar 12 2019The potential model for nuclear astrophysical reactions requires a considerably shallow nuclear potential when a square-well potential is employed to fit experimental data. We discuss the origin of this apparently different behavior from that obtained ... More
Probe Chiral Magnetic Effect with Signed Balance FunctionMar 11 2019In this paper we propose a pair of observables as alternative ways to study the charge separation induced by Chiral Magnetic Effect (CME) in relativistic heavy ion collisions. They are, the out-of-plane to in-plane ratio of fluctuation of the difference ... More
The Role of Baryon Number Conservation in Measurements of FluctuationsMar 11 2019I discuss the role and impact of net-baryon number conservation in measurements of net proton fluctuations in heavy-ion collisions. I show that the magnitude of the fluctuations is entirely determined by the strength of two particle correlations. At LHC ... More
Near-Earth Supernova Explosions: Evidence, Implications, and OpportunitiesMar 11 2019There is now solid experimental evidence of at least one supernova explosion within 100 pc of Earth within the last few million years, from measurements of the short-lived isotope 60Fe in widespread deep-ocean samples, as well as in the lunar regolith ... More
Quark fragmentation as a probe of dynamical mass generationMar 11 2019We address the propagation and hadronization of a struck quark by studying the gauge invariance of the color-averaged cut quark propagator, and by relating this to the single inclusive quark fragmentation correlator by means of new sum rules. Using suitable ... More
Doubly Heavy Baryons Expanded in $1/m_Q$Mar 11 2019Starting from the semirelativistic Hamiltonian for a doubly heavy baryon system ($QQq$) with Coulomb and linear confining scalar potentials, and operating the naive Foldy-Wouthuysen-Tani transformation on two heavy quarks, I construct a formulation how ... More
Three-body problem with velocity-dependent optical potentials: a case of $(d,p)$ reactionsMar 11 2019The change in mass of a nucleon, arising from its interactions with other nucleons inside the target, results in velocity-dependent terms in the Schr\"odinger equation that describes nucleon scattering. It has recently been suggested in a number of publications ... More
Cold dilute nuclear matter with $α$-particle condensation in a generalized nonlinear relativistic mean-field modelMar 11 2019We explore the thermodynamic properties of homogeneous cold nuclear matter including nucleons and $\alpha$-particle condensation at low densities by using a generalized nonlinear relativistic mean-field (gNL-RMF) model. In the gNL-RMF model, the $\alpha$-particle ... More
Cluster structure of light nucleiMar 10 2019We review recent studies of the cluster structure of light nuclei within the framework of the algebraic cluster model (ACM) for nuclei composed of k alpha-particles and within the framework of the cluster shell model (CSM) for nuclei composed of k alpha-particles ... More
In-air ion beam analysis with high spatial resolution proton microbeamMar 10 2019One of the possible ways to maintain the micrometer spatial resolution while performing ion beam analysis in the air is to increase the energy of ions. In order to explore capabilities and limitations of this approach, we have tested a range of proton ... More
Multiparticle production in proton-carbon collisions at $p_{Lab}=31$ GeV/$c$Mar 10 2019The momentum spectra of charged pions ($\pi^+$ and $\pi^-$) and kaons ($K^+$ and $K^-$), as well as protons ($p$), produced in the beam protons induced collisions in a 90-cm-long graphite target [proton-carbon ($p$-C) collisions] at the beam momentum ... More
Spectroscopic Assignments of the Excited $B$-MesonsMar 09 2019Excited $B$-mesons have been observed by the D0, CDF, LHCb and CMS experiments. We use the predictions of the relativized quark model to make quark model spectroscopic assignments for these states. We identify the $B_2^*(5747)$ and $B_1(5721)$ as the ... More
Photoproduction of axion-like particlesMar 08 2019We explore the sensitivity of photon-beam experiments to axion-like particles (ALPs) with QCD-scale masses whose dominant coupling to the Standard Model is either to photons or gluons. We introduce a novel data-driven method that eliminates the need for ... More
The activation method for cross section measurements in nuclear astrophysicsMar 08 2019The primary aim of experimental nuclear astrophysics is to determine the rates of nuclear reactions taking place in stars in various astrophysical conditions. These reaction rates are important ingredient for understanding the elemental abundance distribution ... More
Suddenly shortened half-lives beyond $^{78}$Ni: $N=50$ magic number and high-energy non-unique first-forbidden transitionsMar 08 2019$\beta$-decay rates play a decisive role in understanding the nucleosynthesis of heavy elements and are governed by microscopic nuclear-structure information. A sudden shortening of the half-lives of Ni isotopes beyond $N=50$ was observed at the RIKEN-RIBF. ... More
First spectroscopy of 61Ti and the transition to the Island of Inversion at N = 40Mar 08 2019Isomeric states in 59,61Ti have been populated in the projectile fragmentation of a 345 AMeV 238U beam at the Radioactive Isotope Beam Factory. The decay lifetimes and delayed gamma-ray transitions were measured with the EURICA array. Besides the known ... More
Update of a Multi-Phase Transport Model with Modern Parton Distribution Functions and Nuclear ShadowingMar 08 2019A multi-phase transport (AMPT) model has been successful in explaining a wide range of observables in relativistic heavy ion collisions. In this work, we implement a modern set of free proton parton distribution functions and an impact parameter-dependent ... More
A New Concept for Searching for Time-Reversal Symmetry Violation Using Pa-229 Ions Trapped in Optical CrystalsMar 07 2019Certain pear-shaped nuclei are expected to have enhanced sensitivity to time-reversal and parity-violating interactions originating within the nuclear medium. In particular, Protactinium-229 is thought to be about 100,000 times more sensitive than Mercury-199 ... More
Liquid-Gas phase transition in nucleiMar 07 2019This review article takes stock of the progress made in understanding the phase transition in hot nuclei and highlights the coherence of observed signatures
Gravitational form factors of a spin one particleMar 07 2019We define the form factors of the quark and gluon symmetric energy-momentum tensor (EMT). The static EMT is related to the spatial distributions of energy, spin, pressure and shear forces. They are obtained in the form of a multipole expansion. The relations ... More
The neutron electric dipole moment experiment at the Spallation Neutron SourceMar 07 2019Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control. The nEDM experiment at the Spallation Neutron Source (nEDM@SNS) ... More
Design and Operation of a Windowless Gas Target Internal to a Solenoidal Magnet for Use with a Megawatt Electron BeamMar 06 2019A windowless hydrogen gas target of nominal thickness $10^{19}$ cm$^{-2}$ is an essential component of the DarkLight experiment, which is designed to utilize the Megawatt electron beam at an Energy Recovery Linac (ERL). The design of such a target is ... More
Design and Operation of a Windowless Gas Target Internal to a Solenoidal Magnet for Use with a Megawatt Electron BeamMar 06 2019Mar 12 2019A windowless hydrogen gas target of nominal thickness $10^{19}$ cm$^{-2}$ is an essential component of the DarkLight experiment, which is designed to utilize the Megawatt electron beam at an Energy Recovery Linac (ERL). The design of such a target is ... More
Volume fluctuation and multiplicity correlation on higher-order cumulantsMar 06 2019Initial volume fluctuation (VF) arising from the participant fluctuation would be the background which should be subtracted experimentally from the measured higher-order cumulants. We study the validity of the Volume Fluctuation Correction (VFC) on higher-order ... More
Hadron tomography for pion and its gravitational form factorsMar 06 2019Generalized parton distributions (GPDs) are three-dimensional structure functions of hadrons, and they can reveal the orbital-angular-momentum contributions to the nucleon spin. Therefore, GPDs are important for solving the proton spin puzzle. The generalized ... More
New exotic beams from the SPIRAL 1 upgradeMar 06 2019Since 2001, the SPIRAL 1 facility has been one of the pioneering facilities in ISOL techniques for reaccelerating radioactive ion beams: the fragmentation of the heavy ion beams of GANIL on graphite targets and subsequent ionization in the Nanogan ECR ... More
Measurement of prompt photon production in $\sqrt{s_\mathrm{NN}} = 8.16$ TeV $p$+Pb collisions with ATLASMar 06 2019The inclusive production rates of isolated, prompt photons in $p$+Pb collisions at $\sqrt{s_\mathrm{NN}} = 8.16$ TeV are studied with the ATLAS detector at the Large Hadron Collider using a dataset with an integrated luminosity of 165 nb$^{-1}$ recorded ... More
Electromagnetic couplings of pentaquarksMar 05 2019In this contribution, we discuss the electromagnetic couplings of pentaquark states with hidden charm. This work is motivated by recent experiments at CERN by the LHCb Collaboraton and current experiments at JLab to confirm the existence of hidden-charm ... More
Odd-mass nuclei in the cluster shell modelMar 05 2019In this contribution, we present the cluster shell model which is analogous to the Nilsson model, but for cluster potentials. Special attention is paid to the consequences of the discrete symmetries of three alpha-particles in an equilateral triangle ... More
Factorization of jet cross sections in heavy-ion collisionsMar 05 2019We propose a new phenomenological approach to establish QCD factorization of jet cross sections in the heavy-ion environment. Starting from a factorization formalism in proton-proton collisions, we introduce medium modified jet functions to capture the ... More
Investigations of anisotropic flow using multi-particle azimuthal correlations in pp, p-Pb, Xe-Xe, and Pb-Pb collisions at the LHCMar 05 2019Measurements of anisotropic flow coefficients ($v_n$) and their cross-correlations using two- and multi-particle cumulant methods are reported in collisions of pp at $\sqrt{s} = 13$ TeV, p-Pb at $\sqrt{s_{_{\rm NN}}} = 5.02$ TeV, Xe-Xe at $\sqrt{s_{_{\rm ... More
Structure of 9C through proton resonance scattering with Texas Active Target detectorMar 04 2019Background: Level structure of the most neutron deficient nucleon-bound carbon isotope, 9C, is not well known. Definitive spin-parity assignments are only available for two excited states. No positive parity states have been conclusively identified so ... More
Deep learning based pulse shape discrimination for germanium detectorsMar 04 2019Discrimination between different event signatures is a key requirement for many experiments based on semiconductor radiation detectors. A prime example are experiments searching for rare processes like neutrinoless double beta decay with germanium detectors. ... More
High resolution $γ$-ray spectroscopy using GALILEO arrayMar 04 2019The GALILEO $\gamma$-ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam $\gamma$-ray spectroscopy ... More
57Fe enrichment in mice for \b{eta}-thalassaemia studies via Mossbauer spectroscopy of blood samplesMar 04 2019In this work, wild-type and heterozygous \b{eta}-thalassaemic mice were enriched with 57Fe through gastrointestinal absorption to characterize in more details the iron complexes appeared in the measured Mossbauer spectra. The 57Fe enrichment method was ... More
Ionization Density Dependent Pulse Shape and Proportionality for Single Decay-Componemt LaBr3:Ce: Modeling with Transport and Rate EquationsMar 04 2019Pulse shape discrimination (PSD) is usually achieved by using the different fast and slow decay components of inorganic scintillators, such as BaF2, CsI:Tl, etc. However, LaBr3:Ce3+ is considered not having different components but has been proved to ... More
A new spectroscopic probe to search for magic numbers at high-excitation energiesMar 04 2019Empirical drops in ground-state nuclear polarizabilities indicate deviations from the effect of giant dipole resonances and may reveal the presence of shell effects in semi-magic nuclei with neutron magic numbers $N=50$, 82 and 126. Similar drops of polarizability ... More
Multiplicity dependence of heavy-flavour correlations with charged particle and collective effects in p--Pb collisions at $\sqrt{s_\mathrm{NN}}$= 5.02 TeV with ALICE at LHCMar 02 2019Azimuthal correlation studies of heavy-flavour particles with charged particles in p--Pb collisions can give an insight into the cold nuclear matter effects \cite{Andronic:2015wma} on heavy-quark production and hadronization into heavy-flavour jets. Multiplicity-dependent ... More
Detection of atomic nuclear reaction products via optical imagingMar 01 2019In this paper we propose a new method for measuring the cross section of low yield nuclear reactions by capturing the products in a cryogenically frozen noble gas solid. Once embedded in the noble gas solid, which is optically transparent, the product ... More
The energy-momentum tensor of spin-1 hadrons: formalismMar 01 2019We provide the complete decomposition of the local gauge-invariant energy-momentum tensor for spin-1 hadrons, including non-conserved terms for the individual parton flavors and antisymmetric contributions originating from intrinsic spin. We state sum ... More
Note on neutron star equation of state in the light of GW170817Mar 01 2019From the very first multimessenger event of GW170817, clean robust constraints can be obtained for the tidal deformabilities of the two stars involved in the merger, which provides us unique opportunity to study the equation of states (EOSs) of dense ... More
Technique for Surface Background Rejection in Liquid Argon Dark Matter Detectors using Layered Wavelength-Shifting and Scintillating Thin FilmsMar 01 2019A technique using layered wavelength shifting, scintillating and non-scintillating films is presented to achieve discrimination of surface $\alpha$ events from low-energy nuclear recoils in liquid argon detectors. A discrimination power greater than $10^{8}$, ... More
Nuclear Gamma Radiation Caused by a Muon at Rest in 152SmMar 01 2019Investigation of the interaction of muons with complex nuclei yields important results on the properties of nuclei and on their electromagnetic interaction with muons happening to be in the Coulomb field of the nucleus. The muon serves as a unique instrument ... More
Examination of Flow and Non-Flow Factorization Methods in Small Collision SystemsFeb 28 2019Two particle correlations have been used extensively to study hydrodynamic flow patterns in heavy-ion collisions. In small collision systems, such as $p$$+$$p$ and $p$$+$$A$, where particle multiplicities are much smaller than in $A$$+$$A$ collisions, ... More
Charm baryon production in pp, p-Pb and Pb-Pb collisions with ALICE at the LHCFeb 28 2019In this contribution, the latest ALICE results on charmed baryon production are presented. In particular the measurements of $\Lambda_{\rm c}^{+}$-baryon production in pp collisions at ${\sqrt{\rm s}}$ = 5.02 TeV and in p-Pb collisions at $\sqrt{\rm s_{NN}}$ ... More
Novel method for precisely measuring the $X(3872)$ massFeb 28 2019Mar 07 2019The $X(3872)$ is the first and the most interesting one amongst the abundant $XYZ$ states. Its mass coincides exactly with the $D^0\bar D^{*0}$ threshold with an uncertainty of 180 keV. Precise knowledge of its mass is crucial to understand the $X(3872)$. ... More
Novel method for precisely measuring the $X(3872)$ massFeb 28 2019The $X(3872)$ is the first and the most interesting one amongst the abundant $XYZ$ states. Its mass coincides exactly with the $D^0\bar D^{*0}$ threshold with an uncertainty of 180 keV. Precise knowledge of its mass is crucial to understand the $X(3872)$. ... More
Shape staggering of mid-shell mercury isotopes from in-source laser spectroscopy compared with Density Functional Theory and Monte Carlo Shell Model calculationsFeb 28 2019Neutron-deficient $^{177-185}$Hg isotopes were studied using in-source laser resonance-ionization spectroscopy at the CERN-ISOLDE radioactive ion-beam facility, in an experiment combining different detection methods tailored to the studied isotopes. These ... More
A Novel Method for the Measurement of Half-Lives and Decay Branching Ratios of Exotic NucleiFeb 28 2019A novel method for simultaneous measurement of masses, Q-values, isomer excitation energies, half-lives and decay branching ratios of exotic nuclei has been demonstrated. The method includes first use of a stopping cell as an ion trap, combining containment ... More
A novel ppm-precise absolute calibration method for precision high-voltage dividersFeb 28 2019The most common method to measure direct current high voltage (HV) down to the ppm-level is to use resistive high-voltage dividers. Such devices scale the HV into a range where it can be compared with precision digital voltmeters to reference voltages ... More
On the nature of the $Y(4260)$: a light-quark perspectiveFeb 28 2019The $Y(4260)$ has been one of the most puzzling pieces among the so-called $XYZ$ states. In this paper, we try to gain insights into the structure of the $Y(4260)$ from the light-quark perspective. We study the dipion invariant mass spectrum of the $e^+ ... More
A boron-coated CCD camera for direct detection of Ultracold Neutrons (UCN)Feb 28 2019A new boron-coated CCD camera is described for direct detection of ultracold neutrons (UCN) through the capture reactions $^{10}$B (n,$\alpha$0$\gamma$)$^7$Li (6%) and $^{10}$B(n,$\alpha$1$\gamma$)$^7$Li (94%). The experiments, which extend earlier works ... More
Wide band spectroscopic response of monocrystallines to low dose neutron and gamma radiationFeb 27 2019We identify a number of crystalline structures with promising characteristics to serve as a detection medium for a novel Dark Matter (DM) detector with a low threshold energy. A detector of this kind can be specifically useful in application requiring ... More
Measurement of the 235U(n,f) cross section relative to the 6Li(n,t) and 10B(n,alpha) standards from thermal to 170 keV neutron energy range at n_TOFFeb 27 2019The 235U(n,f) cross section was measured in a wide energy range at n_TOF relative to 6Li(n,t) and 10B(n,alpha), with high resolution and in a wide energy range, with a setup based on a stack of six samples and six silicon detectors placed in the neutron ... More
Measurement of the 235U(n,f) cross section relative to the 6Li(n,t) and 10B(n,alpha) standards from thermal to 170 keV neutron energy range at n_TOFFeb 27 2019Mar 04 2019The 235U(n,f) cross section was measured in a wide energy range at n_TOF relative to 6Li(n,t) and 10B(n,alpha), with high resolution and in a wide energy range, with a setup based on a stack of six samples and six silicon detectors placed in the neutron ... More
Exposing Novel Quark and Gluon Effects in NucleiFeb 27 2019The fundamental theory of the strong interaction -- quantum chromodynamics (QCD) -- provides the foundational framework with which to describe and understand the key properties of atomic nuclei. A deep understanding of the explicit role of quarks and ... More
Ab initio calculations of 5H resonant statesFeb 27 2019By solving the 5-body Faddeev-Yakubovsky equations in configuration space with realistic nuclear Hamiltonians we have studied the resonant states of $^5$H isotope. Two different methods, allowing to bypass the exponentially diverging boundary conditions, ... More
High luminosity fixed-target experiment at the LHCFeb 27 2019By extracting the beam with a bent crystal or by using an internal gas target, the multi-TeV proton and lead LHC beams allow one to perform the most energetic fixed-target experiments ever and to study $pp$, $p$d and $p$A collisions at $\sqrt{s_{NN}}=115$ ... More
$α$ and triton clustering in $^{35}$ClFeb 27 2019Coupling of cluster and deformed structures are important for dynamics of nuclear structure. Threshold energy has been discussed to explain cluster structures coupling to deformed states but relation between threshold energy and excitation energy has ... More
Comparison of fragmentation functions for light-quark- and gluon-dominated jets from $pp$ and Pb+Pb collisions in ATLASFeb 26 2019Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in $25$ pb$^{-1}$ of $pp$ and $0.49$ nb$^{-1}$ of Pb+Pb collision data at $5.02$ TeV per nucleon pair recorded with ... More
Neutron-induced cross sections -- from raw data to astrophysical ratesFeb 26 2019Neutron capture cross sections are one of the most important nuclear inputs to models of stellar nucleosynthesis of the elements heavier than iron. The activation technique and the time-of-flight method are mostly used to determine the required data experimentally. ... More
Rn-222 and Am-241 Gamma Emission Detection Anomalies Correlated with Solar Flare EventsFeb 26 2019For the first time in 2006 measurements of decay rate changes in response to solar X-ray flare events showed that the radioactive decay rate cannot be considered a physical constant. We built two gamma radiation detector systems: one detector facing an ... More
Charge correlations using balance functions of identified particles in Pb-Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV with ALICEFeb 26 2019By studying the balance functions of several hadronic species, one can gain insight into the chem-ical evolution of the Quark \textendash Gluon Plasma and radial flow. In a picture of early hadronisation,pairs of particles and anti-particles (created ... More
Ultrahigh-energy cosmic rays: Anomalies, QCD, and LHC dataFeb 25 2019Mar 15 2019Measurements of proton and nuclear collisions at the Large Hadron Collider at nucleon-nucleon c.m. energies up to $\sqrt{s_{NN}}=$ 13 TeV, have improved our understanding of hadronic interactions at the highest energies reached in collisions of cosmic ... More
Ultrahigh-energy cosmic rays: Anomalies, QCD, and LHC dataFeb 25 2019Measurements of proton and nuclear collisions at the Large Hadron Collider at nucleon-nucleon c.m. energies up to $\sqrt{s_{NN}}=$ 13 TeV, have improved our understanding of hadronic interactions at the highest energies reached in collisions of cosmic ... More
A Precise Determination of (Anti)neutrino Fluxes with (Anti)neutrino-Hydrogen InteractionsFeb 25 2019We present a novel method to perform precision measurements of neutrino and antineutrino fluxes, which are one of the dominant systematic uncertainties affecting present and future long-baseline neutrino experiments. The limited knowledge of the (anti)neutrino ... More
Multiplicity dependence of (anti-)deuteron production in pp collisions at $\sqrt{s}$ = 7 TeVFeb 25 2019In this letter, the production of deuterons and anti-deuterons in pp collisions at $\sqrt{s} = 7$ TeV is studied as a function of the charged-particle multiplicity density at mid-rapidity with the ALICE detector at the LHC. Production yields are measured ... More
Studies on photo- and electro-productions of $Λ(1405)$ via $γ^{(*)} p\to K^{*+}π^0Σ^0$Feb 25 2019We study the photo- and electro-productions of the vector kaon off the proton, i.e., $\gamma^{(*)}p\to K^{*+}\pi^0\Sigma^0$, and investigate the line shape of the $\pi^0\Sigma^0$ invariant mass in an effective Lagrangian approach with the inclusion of ... More
Cosmogenic production of $^{39}$Ar and $^{37}$Ar in argonFeb 25 2019We have experimentally determined the production rate of $^{39}$Ar and $^{37}$Ar due to cosmic ray neutron interactions in argon at sea level. Understanding these production rates is important for argon-based dark matter experiments that plan to utilize ... More
Measurement of gamma-ray production via neutron-$^{16}$O reaction using a 77 MeV quasi-mono energetic neutron beamFeb 24 2019Understanding of gamma-ray production via neutron interactions on oxygen is essential for the study of neutrino neutral-current elastic interactions in water Cherenkov detectors. A measurement of gamma-ray production from such reactions was performed ... More
Charm-Baryon Production in Proton-Proton CollisionsFeb 24 2019Feb 28 2019Recent measurements of charm-baryon production in proton-proton collisions at the LHC have found a surprisingly large yield relative to those of $D$-mesons. We propose that this observation can be explained by the statistical hadronization model (SHM), ... More
$Λp$ Elastic Scattering in the CLAS DetectorFeb 23 2019The elastic scattering process $\Lambda p\to\Lambda p$ offers insights on multiple problems in nuclear physics. $\mathrm{SU}(3)_F$ symmetry implies a close agreement between the $\Lambda p$ and $pp$ scattering cross sections. The $\Lambda p$ elastic scattering ... More
Octet baryon electromagnetic form factor double ratios $(G_E^\ast/G_M^\ast)/(G_E/G_M)$ in a nuclear mediumFeb 23 2019The ratios of the baryon electric ($G_E$) to magnetic ($G_M$) form factors, $G_E/G_M$, can provide us with important information on the structure of baryons in vacuum as demonstrated in recent studies for the proton and neutron systems. It has been argued ... More
Acoustic Rabi oscillations between gravitational quantum states and impact on symmetron dark energyFeb 23 2019The standard model of cosmology provides a robust description of the evolution of the universe. Nevertheless, the small magnitude of the vacuum energy is troubling from a theoretical point of view. An appealing resolution to this problem is to introduce ... More
How Variation in Analytic Choices Can Affect Normalization Parameters and Proton Radius Extractions From Electron Scattering DataFeb 21 2019Floating normalization parameters in regressions allow incorporation of prior knowledge, such as a known analytic behavior and/or a known value at a kinematic endpoint. Unfortunately, there is often no unique way to make use of this prior knowledge, and ... More
Experimental Upper Bound and Theoretical Expectations for Parity-Violating Neutron Spin Rotation in 4HeFeb 21 2019Neutron spin rotation is expected from quark-quark weak interactions in the Standard Model, which induce weak interactions among nucleons that violate parity. We present the results from an experiment searching for the effect of parity violation via the ... More
Prompt Fission Neutrons in the $^{239}$Pu($n,f$) ReactionFeb 21 2019Prompt fission neutron spectra from $^{239}$Pu($n,f$) were measured for incident neutron energies from $0.7$ to $700\,$MeV at the Weapons Neutron Research facility (WNR) of the Los Alamos Neutron Science Center. A newly designed high-efficiency fission ... More
Transverse single spin asymmetry for very forward $π^{0}$ production in polarized proton-proton collisions at $\sqrt{s}$ = 510 GeVFeb 21 2019Feb 28 2019Transverse single spin asymmetry, $A_{N}$, of very forward $\pi^{0}$ production from polarized $p + p$ collisions provides new information toward an understanding of its production mechanism. $A_{N}$ of forward $\pi^{0}$ in the pseudorapidity region of ... More
Transverse single spin asymmetry for very forward $π^{0}$ production in polarized proton-proton collisions at $\sqrt{s}$ = 510 GeVFeb 21 2019Transverse single spin asymmetry, $A_{N}$, of very forward $\pi^{0}$ production from polarized $p + p$ collisions provides new information toward an understanding of its production mechanism. $A_{N}$ of forward $\pi^{0}$ in the pseudorapidity region of ... More
Neutron Skin in CsI and Low-Energy Effective Weak Mixing Angle from COHERENT DataFeb 20 2019Both the neutron skin thickness $\Delta R_{np}$ of atomic nuclei and the low-energy neutrino-nucleon ($\nu N$) interactions are of fundamental importance in nuclear and particle physics, astrophysics as well as new physics beyond the standard model (SM) ... More
Neutron Skin in CsI and Low-Energy Effective Weak Mixing Angle from COHERENT DataFeb 20 2019Feb 25 2019Both the neutron skin thickness $\Delta R_{np}$ of atomic nuclei and the low-energy neutrino-nucleon ($\nu N$) interactions are of fundamental importance in nuclear and particle physics, astrophysics as well as new physics beyond the standard model (SM) ... More
Benchmarking a Non-Equilibrium Approach to Photon Emission in Relativistic Heavy-Ion CollisionsFeb 20 2019In this work, the production of photons through binary scattering processes is investigated for equilibrated hadronic systems. More precisely, a non-equilibrium hadronic transport approach to describe relativistic heavy-ion collisions is benchmarked with ... More