Anti-proton production and annihilation in nuclear collisions at 15-A/GeV

  • We present a calculation of antiproton yields in Si+Al and Si+Au collisions at 14.5A GeV in the framework of the relativistic quantum molecular dynamics approach (RQMD). Multistep processes lead to the formation of high-mass flux tubes. Their decay dominates the initial antibaryon yield. However, the subsequent annihilation in the surrounding baryon-rich matter suppresses the antiproton yield considerably: Two-thirds of all antibaryons are annihilated even for the light Si+Al system. Comparisons with preliminary data of the E802 experiment support this analysis.

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Author:André Jahns, Horst StöckerORCiDGND, Walter GreinerGND, Heinz Sorge
Parent Title (German):Physical review letters
Document Type:Article
Date of Publication (online):2006/05/26
Year of first Publication:1992
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/05/26
Page Number:3
First Page:2895
Last Page:2897
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht