Excitation function of the longitudinal expansion in central nuclear collisions

  • Longitudinal hadron spectra from proton-proton (pp) and nucleus-nucleus (AA) collisions from E_lab= 2 AGeV to sqrt s=200 AGeV are investigated. The widths of the rapidity spectra for various particle species increases monotonously with energy. The present calculation indicates no sign of a step like behaviour as excepted from the Kaon transverse mass systematics. For Pions, the transport simulation is consistent with a Landau type scaling of the rapidity widths, both in central AA reactions and in pp collisions. However, other hadron species do not follow the Landau scaling. The present model predicts a decreasing rapidity width with particle mass for newly produced particles, not supporting a Landau type flow interpretation.

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Metadaten
Author:Marcus BleicherORCiDGND
URN:urn:nbn:de:hebis:30-19849
ArXiv Id:http://arxiv.org/abs/hep-ph/0504207
Document Type:Preprint
Language:English
Date of Publication (online):2005/10/27
Year of first Publication:2005
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2005/10/27
HeBIS-PPN:190627514
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht