https://doi.org/10.1140/epja/i2009-10809-3
Regular Article - Theoretical Physics
Non-extensive statistical effects in high-energy collisions
1
Dipartimento di Fisica, Università di Torino, Via P. Giuria 1, I-10124, Torino, Italy
2
Dipartimento di Fisica, Politecnico di Torino, C.so Duca degli Abruzzi 24, I-10129, Torino, Italy
3
Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Torino, Italy
* e-mail: alavagno@polito.it
Received:
31
January
2009
Accepted:
15
February
2009
Published online:
31
May
2009
Following the basic prescriptions of the relativistic Tsallis’ non-extensive thermostatistics, we investigate from a phenomenological point of view the relevance of non-extensive statistical effects on relativistic heavy-ion collisions observables, such as rapidity spectra of the net proton production, transverse momentum distributions and transverse momentum fluctuations. Moreover, we study the nuclear and the subnuclear equation of state, investigating the critical densities of a phase transition to a hadron-quark-gluon mixed phase by requiring the Gibbs conditions on the global conservation of the electric and the baryon charges. The relevance of small deviations from the standard extensive statistics is studied in the context of intermediate- and high-energy heavy-ion collisions.
PACS: 25.75.-q Relativistic heavy-ion collisions – / 25.75.Nq Quark deconfinement, quark-gluon plasma production, and phase transitions – / 05.90.+m Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems –
© SIF, Springer-Verlag Berlin Heidelberg, 2009
