Signals of non-extensive statistical mechanics in high-energy nuclear collisions

2005/10/20 by W. M. Alberico, W.M. Alberico, Alberico, W. M. +9
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Statistical Mechanics and Entropy #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0510271

13 pages, 3 figures

openalex publication_date 2005/10/20 · arxiv created 2006/05/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Starting from the presence of non-ideal plasma effects due to strongly coupled plasma in the early stage of relativistic heavy-ion collisions, we investigate, from a phenomenological point of view, the relevance of non-conventional statistical mechanics effects on the rapidity spectra of net proton yield at AGS, SPS and RHIC. We show that the broad rapidity shape measured at RHIC can be very well reproduced in the framework of a non-linear relativistic Fokker-Planck equation which incorporates non-extensive statistics and anomalous diffusion.

Related

• Baryon-to-pion ratios within generic (non)extensive statistics
• Rapidity dependence of large-p_t hadron production at RHIC
• Rapidity spectra in high-energy collisions and longitudinal nuclear suppression from nonadditive statistics
• Statistical and dynamical fluctuations in the ratios of higher cumulants in relativistic heavy ion collisions
• The evolution-dominated hydrodynamic model and the pseudorapidity distributions in high energy physics