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arXiv · 1701.02913

Different Non-extensive Models for heavy-ion collisions

Keming Shen·Tamas S. Biro·Enke Wang
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Abstract

The transverse momentum ($p_T$) 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.~Barnaf\"oldi \textit{et.al.}, by a $T$-independent average $p_T^2$ assumption. Finally we compare results with those predicted by another deformed distribution, using Kaniadakis' $\kappa$ parametrization.

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Keming Shen, Tamas S. Biro, Enke Wang. 2017-01-11. Different Non-extensive Models for heavy-ion collisions. https://doi.org/10.1016/j.physa.2017.11.160

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