ON THE RELATION BETWEEN THE WIDTH OF CHARGE BALANCE FUNCTION AND HADRONIZATION TIME IN RELATIVISTIC HEAVY ION COLLISION

2007 ◽  
Vol 16 (10) ◽  
pp. 3355-3362
Author(s):  
DU JIAXIN ◽  
LI NA ◽  
LIU LIANSHOU
Keyword(s):  
Monte Carlo ◽  
Strong Dependence ◽  
Monte Carlo Study ◽  
Heavy Ion ◽  
High Energy ◽  
Relativistic Heavy Ion Collisions ◽  
Heavy Ion Collision ◽  
Balance Function ◽  
Charge Balance ◽  
Ion Collision

A Monte Carlo study on the charge balance function in high energy hadron-hadron and relativistic heavy ion collisions are carried out using the Monte Carlo generators PYTHIA and AMPT, respectively. A strong dependence of the width of balance function on multiplicity is found in both cases. Using the mean parton-freeze-out time of a heavy-ion-collision event as the characteristic hadronization time for the event, it is found that for a fixed multiplicity interval the width of balance function is consistent with being independent of hadronization time.

Collision geometry and particle production in high energy heavy ion collision experiments

2008 ◽  
Vol 32 (4) ◽  
pp. 308-328
Author(s):  
Wang Ya-Ping ◽  
Zhou Dai-Mei ◽  
Huang Rui-Dian ◽  
Cai Xu
Keyword(s):  
Particle Production ◽  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Collision ◽  
Ion Collision

Correlations and fluctuations in high energy heavy ion collision experiments

2008 ◽  
Vol 32 (5) ◽  
pp. 400-418 ◽  
Author(s):  
Zhou Dai-Mei ◽  
Wang Ya-Ping ◽  
Wei Li-Hua ◽  
Cai Xu
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Collision ◽  
Ion Collision

scholarly journals Effect of Magnetic Field on Dilepton Production Rate in Relativistic Heavy Ion Collisions

2020 ◽  
Vol 12 (2) ◽  
pp. 215-221
Author(s):  
P. K. Sethy ◽  
Y. Kumar ◽  
S. S. Singh
Keyword(s):  
Magnetic Field ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Particle Model ◽  
Heavy Ion Collision ◽  
Dilepton Production ◽  
Quasi Particle ◽  
Ion Collisions ◽  
Ion Collision ◽  
Good Agreement

It is believed that a transient strong magnetic field is generated in heavy-ion collision. The strength of this field perpendicular to the reaction plane and is estimated to be around eB=0.03GeV2 at RHIC and eB=0.3GeV2 at LHC. We study the effect of this magnetic field on dilepton yield using a modified quasi particle model. The results show a clear enhancement in dilepton yield and our result is in good agreement with the recently reported results.

Resonance-like QGP signals displayed in general charge balance functions

2014 ◽  
Vol 23 (08) ◽  
pp. 1450036 ◽  
Author(s):  
Ying-Hua Pan ◽  
Wei-Ning Zhang
Keyword(s):  
Bound States ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Relativistic Heavy Ion Collisions ◽  
Balance Function ◽  
Lattice Simulation ◽  
Charge Balance ◽  
Ion Collisions ◽  
Quark Production ◽  
Balance Functions

Experiment and lattice simulation show that the quark–gluon plasma (QGP) system displays strong interaction between constituents at temperature a few times the critical temperature Tc. This QGP picture can be explained by assuming that the QGP matter above Tc is rich in different kinds of bound states, namely resonance-like QGP (RQGP). The chemical composition of the QGP system produced in ultra-relativistic heavy-ion collisions can be investigated through a general charge balance function which describes two-wave quark production during expansion afterward. In this paper, we investigate the signals of this RQGP through general charge balance functions. We find that the quasiparticles in QGP contribute a little to the balance functions because of their heavy masses. The balance functions reduce to the situation discussed before where only one-wave charge production is involved if only the quasiparticles in QGP are considered. However, the baryonic bound states in QGP have a significant effect on the balance function [Formula: see text], causing a dip in the [Formula: see text] balance function at small Δy. The existence of the binary and baryonic bound states amplify the negative dip of the balance function BpK-(Δy) at Δy ∽ 1.

scholarly journals Thermodynamic Treatment of High Energy Heavy Ion Collision

2013 ◽  
Vol 44 (9) ◽  
pp. 1905
Author(s):  
W. Al-Harbi ◽  
T. Hussein
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Collision ◽  
Ion Collision

Collective expansion and hadronization in high energy heavy ion collision experiments

2008 ◽  
Vol 32 (9) ◽  
pp. 714-727
Author(s):  
Wang Ya-Ping ◽  
Zhou Dai-Mei ◽  
Cai Xu
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Collision ◽  
Ion Collision

scholarly journals Temperature fluctuations and Tsallis statistics in relativistic heavy ion collisions

2021 ◽  
pp. 2150152
Author(s):  
Abhisek Saha ◽  
Soma Sanyal
Keyword(s):  
Heavy Ion Collisions ◽  
Temperature Fluctuations ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Heavy Ion Collision ◽  
Tsallis Statistics ◽  
Hadronic Phase ◽  
Ion Collisions ◽  
Ion Collision ◽  
Entropic Index

In this paper, we study temperature fluctuations in the initial stages of the relativistic heavy ion collision using a multiphase transport model. We consider the plasma in the initial stages after collision before it has a chance to equilibrate. We have considered [Formula: see text] collision with a center-of-mass energy of 200 GeV. We use the nonextensive Tsallis statistics to find the entropic index in the partonic stages of the relativistic heavy ion collisions. We find that the temperature and the entropic index have a linear relationship during the partonic stages of the heavy ion collision. This has already been observed in the hadronic phase. A detailed analysis of the dependence of the entropic index on the system shows that for increasing spacetime rapidity, the entropic index of the partonic system increases. The entropic index also depends on the beam collision energy. The calculation of the entropic index from the experimental data fitting of the transverse momenta deals with the hadronic phase. However, our study shows that the behavior of the entropic index in the initial nonequilibrium stage of the collision is very similar to the behavior of the entropic index in the hadronic stage.

scholarly journals Study of Angular Distribution and KNO Scaling in the Collisions of 28Si with Emulsion Nuclei at 14.6A GeV

2021 ◽  
Vol 57 (12) ◽  
pp. 1205
Author(s):  
M. Ayaz Ahmad ◽  
Shafiq Ahmad
Keyword(s):  
Experimental Data ◽  
Angular Distribution ◽  
Nuclear Emulsion ◽  
Multiplicity Distribution ◽  
Heavy Ion ◽  
High Energy ◽  
Universal Function ◽  
Heavy Ion Collision ◽  
Present Experimental Data ◽  
Ion Collision

An attempt has been made to study the angular characteristics of heavy ion collision at high energy in the interactions of 28Si nuclei using with nuclear emulsion. The KNO scaling behavior in terms of the multiplicity distribution has been studied. A simplest universal function has been used to represent the present experimental data.

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