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The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation…

The strangeness production is an important observable to study the QCD phase diagram. The yield ratios of strange quark can be helpful to search for the QCD critical end point (CEP) and/or first-order phase transition. In this work, we…

高能物理 - 唯象学 · 物理学 2023-04-17 Junaid Tariq , Sumaira Ikram , M. U. Ashraf

Dynamical mean field theory (DMFT) is used to study neutron matter, both with and without admixture of the proton fraction. The system is approximated by the lattice Habbard model. The corresponding equation of state as a function of…

强关联电子 · 物理学 2021-05-26 Maxim Velikanov , Alexey N. Rubtsov , Boris Krippa

The STAR Collaboration at RHIC reports measurements of azimuthal correlations of high transverse momentum (p_T) charged hadrons in Au+Au collisions at higher p_T than reported previously. As p_T is increased, a narrow, back-to-back peak…

核实验 · 物理学 2008-11-26 STAR Collaboration , J. Adams

Inclusive double differential multiplicities of deuterons, ^3H, ^3He, and ^4He measured by E877 for 11.5 A GeV/c Au+Au collisions at the AGS are presented. Light fragments at beam-rapidity are measured for the first time at AGS energies.…

核实验 · 物理学 2011-08-19 The E877 Collaboration , J. Barrette

The results of mid-rapidity ($0 < y < 0.8$) neutral pion spectra over an extended transverse momentum range ($1 < p_T < 12$ GeV/$c$) in $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions, measured by the STAR experiment, are presented. The neutral…

核实验 · 物理学 2010-01-27 STAR Collaboration , B. I. Abelev

Transverse momentum distributions of deuterons and anti-deuterons in Au+Au collisions at $\sqrt{S_{NN}}$=14.5, 62.4 and 200 GeV with different centrality are studied in the framework of the multisource thermal model. Transverse momentum…

高能物理 - 唯象学 · 物理学 2021-03-17 Ying Yuan

The spectra of charged hadrons produced near mid-rapidity in d+Au, p+Au and n+Au collisions at 200 GeV center of mass energy per nucleon pair are presented as a function of transverse momentum and centrality. These measurements were…

核实验 · 物理学 2010-03-26 Corey Reed

We propose a method to experimentally study the equation of state of strongly interacting matter created at the early stage of nucleus--nucleus collisions. The method exploits the relation between relative entropy and energy fluctuations…

高能物理 - 唯象学 · 物理学 2009-11-10 M. Gazdzicki , M. I. Gorenstein , St Mrowczynski

In high energy nucleus-nucleus collisions, it is difficult to measure the contributions of resonance strong decay and weak decay to the final measured hadrons as well as the corresponding effects on some physical observables. To provide a…

高能物理 - 唯象学 · 物理学 2019-02-22 Ning Yu , Xiaofeng Luo

We present transverse momentum distributions of charged hadrons produced in Au+Au collisions at sqrt(s_NN) = 200 GeV. The spectra were measured for transverse momenta p_T from 0.25 to 4.5 GeV/c in a rapidity range of 0.2 < y_pi < 1.4. The…

核实验 · 物理学 2008-11-26 B. B. Back , PHOBOS Collaboration

The first measurement of direct photons in Au+Au collisions at sqrt(s_NN) = 200 GeV is presented. The direct photon signal is extracted as a function of the Au+Au collision centrality and compared to NLO pQCD calculations. The direct photon…

核实验 · 物理学 2008-11-26 PHENIX Collaboration , S. S. Adler

{ {\bf Background:} Knowing the difference between the neutron and proton densities of nuclei is a significant topic because of its importance for understanding neutron star structures and cooling mechanisms. The coherent-nuclear…

核理论 · 物理学 2019-10-23 Gerald A. Miller

The charged-particle pseudorapidity density dNch/deta has been measured for Au+Au collisions at sqrt(sNN)=130 GeV at RHIC, using the PHOBOS apparatus. The total number of charged particles produced for the 3% most central Au+Au collisions…

核实验 · 物理学 2010-05-28 PHOBOS Collaboration , B. B. Back

We study the energy dependence of the transverse momentum (pT) spectra for charged pions, protons and anti-protons for Au+Au collisions at \sqrt{s_NN} = 62.4 and 200 GeV. Data are presented at mid-rapidity (|y| < 0.5) for 0.2 < pT < 12…

核实验 · 物理学 2012-08-27 STAR Collaboration

In these proceedings, we present the higher-order cumulants of proton multiplicity distributions of the fixed-target (FXT) run in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 3.0 GeV. The cumulant ratios are presented as a function of…

核实验 · 物理学 2022-08-12 Yu Zhang

Light antinucleus yields are calculated in a multiphase transport model (AMPT) coupled with a dynamical coalescence model. The model is tuned to reproduce the transverse momentum and rapidity distributions of antiproton in $pp$ collisions…

高能物理 - 唯象学 · 物理学 2022-06-22 Tianhao Shao , Jinhui Chen , Yu-Gang Ma , Zhangbu Xu

We present a dynamical description of (anti)proton number fluctuations cumulants and correlation functions in central Au-Au collisions at $\sqrt{s_{\rm NN}} = 7.7-200$ GeV by utilizing viscous hydrodynamics simulations. The cumulants of…

高能物理 - 唯象学 · 物理学 2022-01-10 Volodymyr Vovchenko , Volker Koch , Chun Shen

We present extensive comparisons of $^{16}$O+$^{16}$O collisions at the center-of-mass energy per nucleon pair $\sqrt{s_{NN}}=200$ GeV and $^{208}$Pb+$^{16}$O collisions at $\sqrt{s_{NN}}=68.5$ GeV as well as $^{20}$Ne+$^{20}$Ne collisions…

核理论 · 物理学 2025-09-03 Hai-Cheng Wang , Song-Jie Li , Jun Xu , Zhong-Zhou Ren

Net-proton number fluctuations can be measured experimentally and hence provide a source of important information about the matter created during relativistic heavy ion collisions. Particularly, they may give us clues about the conjectured…

核理论 · 物理学 2019-07-19 Michał Szymański , Marcus Bluhm , Krzysztof Redlich , Chihiro Sasaki
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