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We compute the pion inclusive momentum distribution in a heavy-ion collision, assuming thermal equilibrium and accounting for boundary effects at the time of decoupling. We calculate the chemical potential corresponding to an average pion…

High Energy Physics - Phenomenology · Physics 2009-10-30 Alejandro Ayala , Augusto Smerzi

Several hadronic observables have been studied in central 158 A GeV Pb+Pb collisions using data measured by the WA98 experiment at CERN: single negative pion and kaon production, as well as two- and three-pion interferometry. The…

Nuclear Experiment · Physics 2007-05-23 WA98 Collaboration , M. M. Aggarwal

By deriving a general expression for multiplicity distribution (a conditional probability distribution) in statistical model, we demonstrate the mismatches between experimental measurements and previous theoretical calculations on…

Nuclear Theory · Physics 2016-05-31 Hao-jie Xu

We analyse in detail the possibility of Bose-Einstein condensation of pions produced in heavy-ion collisions at the beam energy $\sqrt{s_{\rm NN}}$ = 2.76 TeV. Our approach is based on the chemical non-equilibrium thermal model of hadron…

Nuclear Theory · Physics 2015-05-27 Viktor Begun , Wojciech Florkowski

A general expression is discussed for pion probability distributions coming from relativistic heavy ion collisions. The general expression contains as limits: 1) The disoriented chiral condensate (DCC), 2) the negative binomial distribution…

Nuclear Theory · Physics 2009-10-31 A. Z. Mekjian

Multi-pion correlations and wavepacket size effects on the pion multiplicity distribution, pion momentum distribution and two-pion interferometry are studied. It is shown that multi-pion Bose-Einstein correlations and the wavepacket size…

High Energy Physics - Phenomenology · Physics 2016-09-06 Q. H. Zhang

Multi-pion correlation effect on the source distribution is studied. It is shown that multi-pion Bose-Einstein correlation make the average radius of the pion source become smaller. The isospin effect on the pion multiplicity distribution…

High Energy Physics - Phenomenology · Physics 2008-11-26 Q. H. Zhang

The effect of Bose-Einstein correlations on multiplicity distributions of identical pions is discussed. It is found that these correlations affect significantly the observed multiplicity distributions, but Einstein's condensation is…

High Energy Physics - Phenomenology · Physics 2009-10-31 Kacper Zalewski

While the abundances of the final state hadrons in relativistic heavy-ion collisions are rather well described by the thermal particle production, the shape of the transverse momentum, $p_{\rm T}$, distribution below $p_{\rm T}\approx500$…

High Energy Physics - Phenomenology · Physics 2025-06-10 Pengzhong Lu , Rafet Kavak , Andrea Dubla , Silvia Masciocchi , Ilya Selyuzhenkov

Within hydrodynamic approach, we study the Bose-Einstein correlation of identical pions by taking into account both event-by-event fluctuating initial conditions and continuous pion emission during the whole development of the hot and dense…

High Energy Physics - Phenomenology · Physics 2008-11-26 O. Socolowski , F. Grassi , Y. Hama , T. Kodama

The status of thermal model descriptions of particle production in heavy ion collisions is presented. We discuss the formulation of statistical models with different implementation of the conservation laws and indicate their applicability…

Nuclear Theory · Physics 2016-11-23 P. Braun-Munzinger , K. Redlich , J. Stachel

We show that a hydrodynamical model with continuous particle emission instead of sudden freeze out can explain both the strange particle abundances and pion abundance from NA35 without extra assumption (e.g., sequential freeze out, modified…

Nuclear Theory · Physics 2007-05-23 F. Grassi , O. Socolowski

Brooding over pions, wave packets and Bose-Einstein correlations, we present a recently obtained analytical solution to a pion laser model, which may describe the final state of pions in high energy heavy ion collisions.

Quantum Physics · Physics 2007-05-23 T. Csorgo , J. Zimanyi

Bose-Einstein correlations in relativistic heavy ion collisions are examined in a general model containing the essential features of hydrodynamical, cascade as well as other models commonly employed for describing the particle freeze-out.…

Nuclear Theory · Physics 2009-10-30 H. Heiselberg , A. P. Vischer

Various phenomenological models of particle multiplicity distributions are discussed using a general form of the grand canonical partition function. These phenomenological models include a wide range of varied processes such as coherent…

Nuclear Theory · Physics 2007-05-23 S. J. Lee , A. Z. Mekjian

We compute the pion inclusive momentum distribution in heavy-ion collisions at AGS energies, assuming thermal equilibrium and accounting for density and expansion effects at the time of decoupling. We compare to data on mid rapidity charged…

Nuclear Theory · Physics 2009-10-31 Alejandro Ayala , Julio Barreiro , Luis M. Montaño

We investigate the influence of medium corrections to the pion dispersion relation on the pion dynamics in intermediate energy heavy ion collisions. To do so a pion potential is extracted from the in-medium dispersion relation and used in…

Nuclear Theory · Physics 2008-11-26 C. Fuchs , L. Sehn , E. Lehmann , J. Zipprich , Amand Faessler

Understanding the origins of collective, fluid-like behavior in ultrarelativistic nuclear collisions constitutes one of the biggest open challenges in the field. In this Letter, it is argued that certain features in the multiplicity…

Nuclear Theory · Physics 2020-10-26 Christopher Plumberg

Particle number fluctuations are studied in the ideal pion gas approaching Bose-Einstein condensation. Two different cases are considered: Bose condensation of pions at large charge densities $\rho_Q$ and Bose condensation at large total…

High Energy Physics - Phenomenology · Physics 2011-07-19 Viktor Begun , Mark Gorenstein

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…

Nuclear Experiment · Physics 2026-04-09 Daniel Kincses , Emese Arpasi , Laszlo Kovacs , Marton Nagy , Mate Csanad
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