Different non-extensive models for heavy-ion collisions

Ke Ming Shen, Tamas S. Biro, En Ke Wang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The transverse momentum (pT) spectra from heavy-ion collisions at intermediate momenta are described by non-extensive statistical models. Assuming a fixed relative variance of the temperature fluctuating event by event or alternatively a fixed mean multiplicity in a negative binomial distribution (NBD), two different linear relations emerge between the temperature, T, and the Tsallis parameter q−1. Our results qualitatively agree with that of G. Wilk. Furthermore we revisit the “Soft+Hard” model, proposed recently by G.G. Barnaföldi et.al., by a T-independent average pT 2 assumption. Relevance of these two parameters is demonstrated. Finally we compare results with those predicted by another deformed distribution, using Kaniadakis’ κ parametrization.

Original languageEnglish
Pages (from-to)2353-2360
Number of pages8
JournalPhysica A: Statistical Mechanics and its Applications
Volume492
DOIs
Publication statusPublished - Feb 15 2018

Fingerprint

Heavy-ion Collisions
ionic collisions
Momentum
Negative binomial distribution
Linear Relation
transverse momentum
Parametrization
Statistical Model
Two Parameters
Multiplicity
Transverse
momentum
temperature
Model
Relevance

Keywords

  • Negative binomial distribution
  • Non-extensive parameter
  • The transverse momentum spectra

ASJC Scopus subject areas

  • Statistics and Probability
  • Condensed Matter Physics

Cite this

Different non-extensive models for heavy-ion collisions. / Shen, Ke Ming; Biro, Tamas S.; Wang, En Ke.

In: Physica A: Statistical Mechanics and its Applications, Vol. 492, 15.02.2018, p. 2353-2360.

Research output: Contribution to journalArticle

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