Thermalization temperature in Pb+Pb collisions at SpS energy from hadron yields and midrapidity pt distributions of hadrons and direct photons
| dc.creator | Peressounko, D. Yu. | |
| dc.creator | Pokrovsky, Yu. E. | |
| dc.date | 2000-09-04 | |
| dc.date | 2001-01-02 | |
| dc.date.accessioned | 2026-07-07T03:42:28Z | |
| dc.date.available | 2026-07-07T03:42:28Z | |
| dc.description | In the frame of 2+1 Bjorken hydrodynamics we describe simultaneously hadron yields and midrapidity pt distributions of direct photons, unflavored, and strange hadrons measured in Pb+Pb collisions at SpS. We find, that a reasonably quantitative description of these data is possible only if we introduce some radial velocity at the beginning of the one-fluid hydrodynamic stage. We fix uniquely all parameters of this model, and estimate an initial temperature of the just thermalized state T_{in}=(200 +40 -20) MeV in the case of EoS with phase transition to Quark-Gluon Plasma, and T_{in}=(230 +60 -30) MeV in the pure hadronic scenario. We conclude that SpS data considered in our study can not distinguish between a production of QGP, and its absence. | |
| dc.description | 4 pages, 4 figures, ref. to recent works added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0009025 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0009025 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/39911 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Thermalization temperature in Pb+Pb collisions at SpS energy from hadron yields and midrapidity pt distributions of hadrons and direct photons | |
| dc.type | text |