Collective mechanism of dilepton production in high-energy nuclear collisions.
- Collective bremsstrahlung of vector meson fields in relativistic nuclear collisions is studied within the time dependent Walecka model. Mutual deceleration of the colliding nuclei is described by introducing the e ective stopping time and average rapidity loss of baryons. It is shown that electromagnetic decays of virtual ω mesons produced by bremsstrahlung mechanism can provide a substantial contribution to the soft dilepton yield at the SPS bombarding energies. In particular, it may be responsible for the dilepton enhancement observed in 160 AGev central Pb+Au collisions. Suggestions for future experiments to estimate the relative contribution of the collective mechanism are given.
| Verfasserangaben: | Igor N. MishustinORCiDGND, Leonid M. Satarov, Horst StöckerORCiDGND, Walter GreinerGND |
|---|---|
| URN: | urn:nbn:de:hebis:30-23295 |
| Dokumentart: | Preprint |
| Sprache: | Englisch |
| Datum der Veröffentlichung (online): | 16.12.2005 |
| Jahr der Erstveröffentlichung: | 1997 |
| Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Datum der Freischaltung: | 16.12.2005 |
| Freies Schlagwort / Tag: | Bremsstrahlung; Dilepton; Kernkollision; Walecka Modell Walecka model; bremsstrahlung; dilepton; nuclear collisions |
| Quelle: | J.Phys.G24:L17-L21,1998, http://arxiv.org/abs/hep-ph/9711271 |
| HeBIS-PPN: | 185296556 |
| Institute: | Physik / Physik |
| DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Lizenz (Deutsch): |  Deutsches Urheberrecht |
