On event-by-event fluctuations in nuclear collisions

  • We demonstrate that a new type of analysis in heavy-ion collisions, based on an event-by-event analysis of the transverse momentum distribution, allows us to obtain information on secondary interactions and collective behaviour that is not available from the inclusive spectra. Using a random walk model as a simple phenomenological description of initial state scattering in collisions with heavy nuclei, we show that the event-by-event measurement allows a quantitative determination of this effect, well within the resolution achievable with the new generation of large acceptance hadron spectrometers. The preliminary data of the NA49 collaboration on transverse momentum fluctuations indicate qualitatively different behaviour than that obtained within the random walk model. The results are discussed in relation to the thermodynamic and hydrodynamic description of nuclear collisions.

Download full text files

Export metadata

Additional Services

Share in Twitter Search Google Scholar
Author:Marek GaździckiORCiD, Andrei Leonidov, Gunther RolandGND
ArXiv Id:http://arxiv.org/abs/hep-ph/9711422
Parent Title (German):IKF-HENPG ; 5-97
Series (Serial Number):IKF–HENPG (5-97)
Publisher:Institut für Kernphysik, Goethe-Universität Frankfurt
Place of publication:Frankfurt am Main
Document Type:Working Paper
Year of Completion:1997
Year of first Publication:1997
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/09/30
Page Number:9
Source:Eur.Phys.J. C6 (1999) , http://arxiv.org/abs/hep-ph/9711422
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht