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The event-by-event analysis of heavy ions collisions is becoming possible with advent of large acceptance detectors: it can provide dynamical information which cannot be obtained from inclusive spectra. We identify some observables which…

高能物理 - 唯象学 · 物理学 2009-10-30 E. V. Shuryak

The higher order moments of the net-baryon distributions in relativistic heavy ion collisions are useful probes for the QCD critical point and fluctuations. Within a simple model we study the colliding energy and centrality dependence of…

核理论 · 物理学 2013-05-30 X. Wang , C. B. Yang

Mapping out the equation of state (EOS) of nuclear matter is a long standing problem in nuclear physics. Recent emphasis is onto the density dependence of the symmetry energy, with experiments needing dedicated symmetry-energy observables.…

核理论 · 物理学 2014-08-20 Jun Hong , P. Danielewicz

In the era of precision measurements in high-energy heavy-ion physics, there is an increasing expectation towards phenomenological and theoretical studies to provide a better description of data. In recent years, multiple experiments have…

核实验 · 物理学 2026-04-09 Daniel Kincses , Emese Arpasi , Laszlo Kovacs , Marton Nagy , Mate Csanad

We present the results of two-pion Bose-Einstein correlations measured in Pb--Pb collisions at a center-of-mass energy sqrt(s_NN) = 2.76 TeV recorded by ALICE at the Large Hadron Collider. These types of correlations allow to extract, using…

高能物理 - 实验 · 物理学 2019-08-13 Łukasz Kamil Graczykowski

The size of the particle emission region in high-energy collisions can be deduced using the femtoscopic correlations of particle pairs at low relative momentum. Such correlations arise due to quantum statistics and Coulomb and strong final…

核实验 · 物理学 2016-03-18 ALICE Collaboration

Femtoscopic correlations between charged pions and kaons for different charge combinations are measured in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV with ALICE at the LHC. The three-dimensional pion-kaon ($\pi-{\rm K}$) correlation…

高能物理 - 实验 · 物理学 2019-01-23 Ashutosh Kumar Pandey

We determine rapidity asymmetry in the production of charged pions, protons and anti-protons for large transverse momentum (pT) for d+Au collisions at \sqrt s_NN = 200 GeV. The identified hadrons are measured in the rapidity regions |y| <…

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

We study the HBT interferometry of ultra-relativistic nuclear collisions using a freezeout model in which free pions emerge in the course of the last binary collisions in the hadron gas. We show that the HBT correlators of both identical…

高能物理 - 唯象学 · 物理学 2009-10-31 A. Makhlin , E. Surdutovich

The elliptic flow (squeeze-out) of neutrons, protons and light complex particles in reactions of neutron-rich systems at relativistic energies is proposed as an observable sensitive to the strength of the symmetry term in the equation of…

Recent LHC results concerning full jet-quenching in PbPb collisions have been presented in terms of a jet asymmetry parameter, measuring the imbalance between the transverse momenta of leading and subleading jets. We examine the potential…

高能物理 - 唯象学 · 物理学 2011-07-01 Matteo Cacciari , Gavin P. Salam , Gregory Soyez

We calculate the centrality dependence of direct photons produced in Au+Au collisions at sqrt{s}=200GeV and their transverse momentum spectra within the Parton-Hadron-String Dynamics (PHSD) transport approach. As sources for 'direct'…

核理论 · 物理学 2014-03-26 O. Linnyk , W. Cassing , E. Bratkovskaya

Three-dimensional, as well as one- and two-dimensional, studies of multiplicity fluctuation are performed using AMPT model to generate central Au-Au collision events at ${\sqrt s_{NN}}= 200$ GeV. Two- and three-dimensional normalized…

核理论 · 物理学 2016-01-06 Xie YiLong , Chen Gang , Wang JiangLing , Liu ZhaoHui , Wang MeiJuan

I discuss the quantities and effects important for the freeze-out and outline a formalism for the description of continuous decoupling of particles from the fireball. Then I present a calculation of the scattering rates of pions at various…

核理论 · 物理学 2007-05-23 Boris Tomasik

We systematically investigate the pion transverse momentum spectrum, elliptic flow, and Hanbury-Brown-Twiss (HBT) interferometry in the granular source model for the heavy ion collisions of Au-Au at $\sqrt{s_{NN}}=$ 200 GeV and Pb-Pb at…

核理论 · 物理学 2014-08-19 Jing Yang , Yan-Yu Ren , Wei-Ning Zhang

The freeze-out of hot and dense hadronic matter formed in relativistic nuclear collisions is probed by HBT interferometry of identical pions, kaons, etc. Coulomb repulsion/attraction of positive/negative particles show up at small particle…

核理论 · 物理学 2009-10-31 Henning Heiselberg

A model-independent, three-dimensional source function for pion pairs has been extracted from Pb+Pb collisions at $\sqrt s_{NN}=17.3$ AGeV. The extracted sourc e exhibits long-range non-Gaussian tails in the directions of the pion-pair net…

核实验 · 物理学 2008-11-26 P. Chung , P. Danielewicz

The experimental data from the RHIC and LHC experiments of invariant pT spectra in A+A and p + p collisions are analysed with Tsallis distributions in different approaches. The information about the freeze-out surface in terms of freeze-out…

高能物理 - 唯象学 · 物理学 2016-11-22 Dhananjaya Thakur , Sushanta Tripathy , Prakhar Garg , Raghunath Sahoo , Jean Cleymans

We present a systematic analysis of two-pion interferometry for the central Au+Au collisions at $\sqrt{S_{NN}}$ = 3, 5, 7, 11, 17, 27, 39, 62, 130 and 200 GeV/c with the help of a multiphase transport (AMPT) model. Emission source-size…

核理论 · 物理学 2014-04-29 Z. Q. Zhang , S. Zhang , Y. G. Ma