A5058032654- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Pulsars and Gravitational Waves Research
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Advanced Frequency and Time Standards
- History and Developments in Astronomy
- Image and Object Detection Techniques
- Radiation Effects in Electronics
- Nuclear reactor physics and engineering
- Astrophysics and Cosmic Phenomena
- Parallel Computing and Optimization Techniques
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Optical measurement and interference techniques
Huazhong University of Science and Technology
2015-2024
Université Libre de Bruxelles
2021
Shandong University
2008-2016
Frankfurt Institute for Advanced Studies
2011-2013
Brookhaven National Laboratory
1999-2013
High Energy Accelerator Research Organization
2013
Lawrence Berkeley National Laboratory
2008-2010
University of Utah
2007
The University of Adelaide
2007
Kent State University
2002
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
We compute the electromagnetic fields generated in heavy-ion collisions by using HIJING model. Although after averaging over many events only magnetic field perpendicular to reaction plane is sizable, we find very strong electric and both parallel on event-by-event basis. study time evolution spatial distribution of these fields. In particular, response quark-gluon plasma can give nontrivial The implications hadronic observables are also discussed.
We study the event-by-event generation of flow vorticity in BNL Relativistic Heavy Ion Collider $\mathrm{Au}+\mathrm{Au}$ collisions and CERN Large Hadron $\mathrm{Pb}+\mathrm{Pb}$ by using hijing model. Different definitions field velocity are considered. A variety properties explored, including impact parameter dependence, collision energy spatial distribution, fluctuation magnitude azimuthal direction, time evolution. In addition, distribution helicity is also studied.
The hot and dense matter generated in heavy-ion collisions contains intricate vortical structure which the local fluid vorticity can be very large. Such polarize spin of produced particles. We study event-by-event generation so-called thermal Au+Au at energy region $\sqrt{s}=7.7--200$ GeV calculate its time evolution, spatial distribution, etc., a multiphase transport model. then compute polarization $\mathrm{\ensuremath{\Lambda}}$ $\overline{\mathrm{\ensuremath{\Lambda}}}$ hyperons as...
Partons produced in the early stage of noncentral heavy-ion collisions can develop a longitudinal fluid shear because unequal local number densities participant target and projectile nucleons. Under such shear, parton pairs with nonvanishing impact parameters have finite relative orbital angular momentum along direction opposite to reaction plane. Such among locally interacting quark lead global polarization same spin-orbital coupling. Local is estimated within both Landau fireball Bjorken...
The quark-gluon matter produced in relativistic heavy-ion collisions may contain local domains which parity ($\mathcal{P}$) and combined charge conjugation ($\mathcal{C}\mathcal{P}$) symmetries are not preserved. When coupled with an external magnetic field, such $\mathcal{P}$- $\mathcal{C}\mathcal{P}$-odd will generate electric currents along the field---a phenomenon called chiral effect (CME). Recently, STAR Collaboration at BNL Relativistic Heavy Ion Collider (RHIC) ALICE CERN Large...
The non-central Cu + Au collisions can create strong out-of-plane magnetic fields and in-plane electric fields. By using the HIJING model, we study general properties of electromagnetic in at 200 GeV their impacts on charge-dependent two-particle correlator $\gamma_{q_1q_2}=<\cos(\phi_1+\phi_2-2\psi_{RP})>$ (see main text for definition) which was used detection chiral effect (CME). Compared with collisions, find that strongly suppress or even reverse its sign if lifetime is long. Combining...
In this paper, we investigate the hydrodynamic collectivity in proton--proton (pp) collisions at 13 TeV, using iEBE-VISHNU hybrid model with HIJING initial conditions. With properly tuned parameters, our simulations can remarkably describe all measured 2-particle correlations, including integrated and differential elliptic flow coefficients for charged identified hadrons ($K_S^0$, $\Lambda$). However, calculations show positive 4-particle cumulant $c_{2}\{4\}$ high multiplicity pp...
Within the framework of generalized factorization higher-twist contributions to semi-inclusive cross sections deeply inelastic scattering (DIS) off a large nucleus, multiple parton leads an effective medium-modified fragmentation function and corresponding DGLAP evolution equations. We extend study include gluon induced quark-antiquark production via fusion. numerically solve these (mDGLAP) equations scale (${Q}^{2}$), energy ($E$), length ($L$), jet transport parameter ($\mathrm{q\ifmmode...
Multiple parton scatterings in high-energy p+A collisions involve multi-parton correlation inside the projectile and color coherence of multiple jets which will lead to nuclear modification final hadron spectra relative that p+p collisions. Such is studied within HIJING 2.1 model includes initial shadowing, transverse momentum broadening, flavor through conservation fragmentation jets. They are shown modify partonic content hadrons at Large Hadron Collider.
The spatial configuration of initial partons in high-multiplicity proton-proton scatterings at 14 TeV is assumed as three randomly positioned "hot spots". parton momentum distribution the hot spots calculated by HIJING2.0 with some modifications. This condition causes not only large eccentricity $\epsilon_2$ but also triangularity $\epsilon_3$ and correlation $\epsilon_2-\epsilon_3$ event-plane angles. final elliptic flow $v_2$, triangular $v_3$, $v_2-v_3$ angles are using cascade model...
The isobaric collisions of $^{96}_{44}$Ru + and $^{96}_{40}$Zr have recently been proposed to discern the charge separation signal chiral magnetic effect (CME). In this article, we employ string melting version a multiphase transport model predict various charged-particle observables, including $dN/d\eta$, $p_T$ spectra, elliptic flow ($v_2$), particularly possible CME signals in Ru Zr at $\sqrt{s_{_{\rm NN}}}$ = 200 GeV. Two sets nuclear structure parametrization explored, difference...
Abstract The CMS Inner Tracker, made of silicon pixel modules, will be entirely replaced prior to the start High Luminosity LHC period. One crucial components new Tracker system is readout chip, being developed by RD53 Collaboration, and in particular its analogue front-end, which receives signal from sensor digitizes it. Three different front-ends (Synchronous, Linear, Differential) were designed implemented RD53A demonstrator chip. A dedicated evaluation program was carried out select most...
We give a numerical simulation of the generation magnetic field and charge-separation signal due to chiral effect (CME) — induction an electric current by in parity-odd matter collisions isobaric nuclei, 9644Ru + 9640Zr 9640Zr, at sNN=200 GeV. show that such provide ideal tool disentangle CME from possible elliptic-flow driven background effects. also discuss some other effects can be tested using collisions.
We employ a 3+1D anomalous hydrodynamics with initial condition generated by HIJING to simulate the chiral vortical effect and magnetic in heavy-ion collisions. This allows us calculate charge-dependent two-particle correlations respect reaction plane at different collision energies centralities. then compare computed results experimental data give discussions on possible background effects.
We develop a Monte Carlo event generator based on the combination of parton production formula including effects saturation (called DHJ formula) and hadronization process due to Lund string fragmentation model. This is designed for description hadron productions at forward rapidities in wide transverse momentum range high-energy proton-proton collisions. analyze spectra charged hadrons as well identified particles, pion, kaon, (anti)proton RHIC energy ultraforward neutral pion from LHCf...
In a noncentral heavy-ion collision, the two colliding nuclei have finite angular momentum in direction perpendicular to reaction plane. After fraction of total is retained produced hot quark-gluon matter and manifested form fluid shear. Such shear creates flow vorticity. We study some features such generated vorticity, including its strength, beam energy dependence, centrality spatial distribution.
Recent experiments show that $\Delta\gamma$, an observable designed for detecting the chiral magnetic effect (CME), in small collision system $p+A$ is similar with heavy ion $A+A$. This brings a challenge to existence of CME because it believed there no azimuthal correlation between orientation field ($\Phi_B$) and participant plane ($\Phi_2$) system. In this work, we introduce three charge density models describe inner distributions proton neutron, calculate electric fields produced...