Energy Dependence of Λ and ¯Λ Production at CERN-SPS Energies

  • Rapidity distributions for $\Lambda$ and $\bar{\Lambda}$ hyperons in central Pb-Pb collisions at 40, 80 and 158 A$\cdot$GeV and for ${\rm K}_{s}^{0}$ mesons at 158 A$\cdot$GeV are presented. The lambda multiplicities are studied as a function of collision energy together with AGS and RHIC measurements and compared to model predictions. A different energy dependence of the $\Lambda/\pi$ and $\bar{\Lambda}/\pi$ is observed. The $\bar{\Lambda}/\Lambda$ ratio shows a steep increase with collision energy. Evidence for a $\bar{\Lambda}/\bar{\rm p}$ ratio greater than 1 is found at 40 A$\cdot$GeV.

Download full text files

Export metadata

Additional Services

Share in Twitter Search Google Scholar
Metadaten
URN:urn:nbn:de:hebis:30-16498
ArXiv Id:http://arxiv.org/abs/nucl-ex/0209002
Document Type:Preprint
Language:English
Date of Publication (online):2005/09/27
Year of first Publication:2002
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/09/27
Source:Nucl.Phys. A715 (2003), http://arxiv.org/abs/nucl-ex/0209002
HeBIS-PPN:43231430X
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht