The parton to hadron phase transition observed in Pb+Pb collisions at 158 GeV per nucleon

Hadronic yields and yield ratios observed in Pb+Pb collisions at the SPS energy of 158 GeV per nucleon are known to resemble a thermal equilibrium population at T=180 +/- 10 MeV, also observed in elementary e+ + e- to ha
Hadronic yields and yield ratios observed in Pb+Pb collisions at the SPS energy of 158 GeV per nucleon are known to resemble a thermal equilibrium population at T=180 +/- 10 MeV, also observed in elementary e+ + e- to hadron data at LEP. We argue that this is the universal consequence of the QCD parton to hadron phase transition populating the maximum entropy state. This state is shown to survive the hadronic rescattering and expansion phase, freezing in right after hadronization due to the very rapid longitudinal and transverse expansion that is inferred from Bose-Einstein pion correlation analysis of central Pb+Pb collisions.
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Metadaten
Author:Reinhard Stock
URN:urn:nbn:de:hebis:30-14944
Document Type:Preprint
Language:English
Date of Publication (online):2005/09/14
Year of first Publication:1999
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/09/14
Source:Phys.Lett. B456 (1999) 277-282, http://arxiv.org/abs/hep-ph/9905247
HeBIS PPN:18538952X
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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