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.
| Author: | Igor N. MishustinORCiDGND, Leonid M. Satarov, Horst StöckerORCiDGND, Walter GreinerGND |
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| URN: | urn:nbn:de:hebis:30-23295 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 2005/12/16 |
| Year of first Publication: | 1997 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2005/12/16 |
| Tag: | Bremsstrahlung; Dilepton; Kernkollision; Walecka Modell Walecka model; bremsstrahlung; dilepton; nuclear collisions |
| Source: | J.Phys.G24:L17-L21,1998, http://arxiv.org/abs/hep-ph/9711271 |
| HeBIS-PPN: | 185296556 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  Deutsches Urheberrecht |
