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 language | English |
|---|---|
| Pages (from-to) | 2353-2360 |
| Number of pages | 8 |
| Journal | Physica A: Statistical Mechanics and its Applications |
| Volume | 492 |
| DOIs | |
| Publication status | Published - Feb 15 2018 |
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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 journal › Article
}
TY - JOUR
T1 - Different non-extensive models for heavy-ion collisions
AU - Shen, Ke Ming
AU - Biro, Tamas S.
AU - Wang, En Ke
PY - 2018/2/15
Y1 - 2018/2/15
N2 - 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.
AB - 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.
KW - Negative binomial distribution
KW - Non-extensive parameter
KW - The transverse momentum spectra
UR - http://www.scopus.com/inward/record.url?scp=85037689199&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85037689199&partnerID=8YFLogxK
U2 - 10.1016/j.physa.2017.11.160
DO - 10.1016/j.physa.2017.11.160
M3 - Article
AN - SCOPUS:85037689199
VL - 492
SP - 2353
EP - 2360
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
SN - 0378-4371
ER -