13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

The Tsallis Thermometer -- understanding the non-extensivity parametersThe Tsallis Thermometer -- understanding the non-extensivity parameters

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Collectivity in small systems Poster Session


Ádám Takács (Wigner Research Centre for Physics)


Identified hadron spectra from recent years are analyzed in the non-
extensive thermodynamical framework. The Tsallis-Pareto cut power-law
is known to describe the pT distributions for a wide energy range, but
its origin is thermodynamical-model dependent [1,2].

We pursue the physical origin of this observation by investigating the
center-of-mass energy, multiplicity, mass and strangeness dependency of
the Tsallis q and T parameters comprehensively from ee, pp to pA
collisions [3,4]. We describe the main characteristics of a statistical
hadronization model that could explain our observations. We present the
Tsallis-thermometer, which can be use to gain more information on the
high-energy nuclear collisions even for the smallest system [5].

[1] T.S. Biró, G.G. Barnaföldi, P. Ván, Thermodynamic Derivation of the Tsallis and Rényi Entropy Formulas and the Temperature of Quark-Gluon Plasma, Eur.Phys.J. A49 (2013) 110;
[2] T.S. Biró, P. Ván, G.G. Barnaföldi, K. Ürmössy, Statistical Power Law due to Reservoir Fluctuations and the Universal Thermostat Independence Principle, Entropy 2014, 16(12), 6497-6514;
[3] K. Ürmössy, T.S. Biró, G.G. Barnaföldi, Microcanonical jet-fragmentation in proton–proton collisions at LHC energy, Phys.Lett. B718 (2012) 125-129;
[4] G. Bíró, G.G. Barnaföldi, T.S. Biró, K. Ürmössy, Á. Takács, Systematic Analysis of the Non-Extensive Statistical Approach in High Energy Particle Collisions—Experiment vs. Theory, Entropy 2017, 19(3), 88;
[5] G. Bíró et al, in preparation.

Content type Theory
Centralised submission by Collaboration Presenter name already specified

Primary authors

Ádám Takács (Wigner Research Centre for Physics) Gergely Barnafoldi (Hungarian Academy of Sciences (HU)) Tamas Sandor Biro (MTA Wigner RCP) Gabor Biro (Hungarian Academy of Sciences (HU))

Presentation Materials