Enhanced antiproton production in Pb(160 AGeV)+Pb reactions: evidence for quark gluon matter?
- The centrality dependence of the antiproton per participant ratio is studied in Pb(160 AGeV)+Pb reactions. Antiproton production in collisions of heavy nuclei at the CERN/SPS seems considerably enhanced as compared to conventional hadronic physics, given by the antiproton production rates in pp and antiproton annihilation in p p reactions. This enhancement is consistent with the observation of strong in-medium effects in other hadronic observables and may be an indication of partial restoration of chiral symmetry.
Author: | Marcus BleicherORCiDGND, Mohamed Belkacem, Steffen A. BassORCiDGND, Sven SoffORCiD, Horst StöckerORCiDGND |
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URN: | urn:nbn:de:hebis:30-7126 |
URL: | http://de.arxiv.org/abs/hep-ph/0004045 |
Document Type: | Preprint |
Language: | English |
Year of Completion: | 2000 |
Year of first Publication: | 2000 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2005/04/14 |
Source: | http://de.arxiv.org/abs/hep-ph/0004045 , Report-no: LBNL-45444 |
HeBIS-PPN: | 12880243X |
Institutes: | Physik / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Licence (German): | Deutsches Urheberrecht |