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.

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Metadaten
Author:Christian Spieles, Lars GerlandGND, Nils Hammon, Marcus BleicherORCiDGND, Steffen A. Bass, Horst StöckerORCiDGND, Walter GreinerGND, Carlos Lourenco, Ramona Vogt
URN:urn:nbn:de:hebis:30-23611
Document Type:Preprint
Language:English
Date of Publication (online):2006/01/05
Year of first Publication:1997
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/01/05
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 / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht