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.
| Verfasserangaben: | Christian Spieles, Lars GerlandGND, Nils HammonGND, Marcus BleicherORCiDGND, Steffen A. BassORCiDGND, Horst StöckerORCiDGND, Walter GreinerGND, Carlos LourençoORCiD, Ramona VogtORCiD |
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| URN: | urn:nbn:de:hebis:30-23611 |
| Dokumentart: | Preprint |
| Sprache: | Englisch |
| Datum der Veröffentlichung (online): | 05.01.2006 |
| Jahr der Erstveröffentlichung: | 1997 |
| Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Datum der Freischaltung: | 05.01.2006 |
| Freies Schlagwort / Tag: | Drell-Yan-Prozess; Kollisionen schwerer Ionen Drell-Yan production; heavy ion collisions |
| Quelle: | Eur.Phys.J.C5:349-355,1998. [hep-ph/9706525] |
| HeBIS-PPN: | 185305423 |
| Institute: | Physik / Physik |
| DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Lizenz (Deutsch): |  Deutsches Urheberrecht |
