1997/06/27 by C. Spieles, L. Gerland, N. Hammon +11 · 1 citation
Physics and Astronomy · #Baryon #Collision #Drell–Yan process #Electron #Hadron #Heavy ion #High-Energy Particle Collisions Research #Impact parameter #Ion #Lepton #Meson #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Projectile #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.1007/s100520050279
published as Eur.Phys.J.C5:349-355,1998 · 22 pages including 7 figures, submitted to Z. Phys. C
arxiv created 1997/06/27 · openalex publication_date 1998/01/01 · arxiv updated 2011/09/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 contributions from meson-baryon interactions, small in hadron-nucleus interactions, are found to be substantial in nucleus-nucleus collisions at low dilepton masses. Preresonance collisions of partons may further increase the yields.