A Microscopic calculation of secondary Drell-Yan production in heavy ion collisions
A study of secondary Drell-Yan production in nuclear collisions is presented for SPS energies. In addition to the lepton pairs produced in the initial collisions of the projectile and target nucleons, we consider the potentially high dilepton yield from hard valence antiquarks in produced mesons and antibaryons. We calculate the secondary Drell-Yan contributions taking the collision spectrum of hadrons from the microscopic model URQMD. The con- tributions from meson-baryon interactions, small in hadron-nucleus interac- tions, are found to be substantial in nucleus-nucleus collisions at low dilepton masses. Preresonance collisions of partons may further increase the yields.
| Author: | Christian Spieles, Lars Gerland, Nils Hammon, Marcus Bleicher, Steffen A. Bass, Horst Stöcker, Walter Greiner, Carlos Lourenco, Ramona Vogt |
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| URN: | urn:nbn:de:hebis:30-23611 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 05.01.2006 |
| Year of first Publication: | 1997 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | Drell-Yan-Prozess; Kollisionen schwerer Ionen Drell-Yan production ; heavy ion collisions |
| Source: | Eur.Phys.J.C5:349-355,1998. [hep-ph/9706525] |
| HeBIS PPN: | 185305423 |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
