The parton-hadron phase transition in central nuclear collisions at the CERN SPS

  • A selection of recent data referring to Pb+Pb collisions at the SPS CERN energy of 158 GeV per nucleon is presented which might describe the state of highly excited strongly interacting matter both above and below the deconfinement to hadronization (phase) transition predicted by lattice QCD. A tentative picture emerges in which a partonic state is indeed formed in central Pb+Pb collisions which hadronizes at about T = 185 MeV, and expands its volume more than tenfold, cooling to about 120 MeV before hadronic collisions cease. We suggest further that all SPS collisions, from central S+S onward, reach that partonic phase, the maximum energy density increasing with more massive collision systems.

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Metadaten
Author:Reinhard StockGND
URN:urn:nbn:de:hebis:30-14777
Document Type:Preprint
Language:English
Date of Publication (online):2005/09/13
Year of first Publication:1999
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2005/09/13
Tag:confinement; critical phenomena; heavy ion; lead; scattering; sulfur
Source:Publ. in Prog.Part.Nucl.Phys. 42 (1999) 295-309 , http://arxiv.org/abs/hep-ph/9901415
HeBIS-PPN:185389503
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht