Dissociation rates of J / psi's with comoving mesons : thermal versus nonequilibrium scenario.
- We study J/psi dissociation processes in hadronic environments. The validity of a thermal meson gas ansatz is tested by confronting it with an alternative, nonequilibrium scenario. Heavy ion collisions are simulated in the frame- work of the microscopic transport model UrQMD, taking into account the production of charmonium states through hard parton-parton interactions and subsequent rescattering with hadrons. The thermal gas and microscopic transport scenarios are shown to be very dissimilar. Estimates of J/psi survival probabilities based on thermal models of comover interactions in heavy ion collisions are therefore not reliable.
| Verfasserangaben: | Christian Spieles, Ramona VogtORCiD, Lars GerlandGND, Steffen A. BassORCiDGND, Marcus BleicherORCiDGND, Horst StöckerORCiDGND, Walter GreinerGND |
|---|---|
| URN: | urn:nbn:de:hebis:30-22925 |
| Dokumentart: | Preprint |
| Sprache: | Englisch |
| Datum der Veröffentlichung (online): | 08.12.2005 |
| Jahr der Erstveröffentlichung: | 1998 |
| Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Datum der Freischaltung: | 08.12.2005 |
| Freies Schlagwort / Tag: | Kollisionen schwerer Ionen; Meson; Molekulare Dynamik; UrQMD; ultrarelativistisch Meson; Ultrarelativistic Quantum Molecular Dynamics; UrQMD; heavy ion collisions |
| Quelle: | Report-no: LBNL-42280 ; Journal-ref: J.Phys. G25 (1999) 2351-2359 ; http://www.arxiv.org/abs/hep-ph/9809441 |
| HeBIS-PPN: | 185382894 |
| Institute: | Physik / Physik |
| DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Lizenz (Deutsch): |  Deutsches Urheberrecht |
