Minijet-associated dilepton production in ultrarelativistic heavy ion collisions

Journal Article · Sun May 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.4532· OSTI ID:5073384

Eskola, K J ^[1]; Wang, X ^[2]

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1. Nuclear Science Division, Mailstop 70A-3307, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States) Laboratory of High Energy Physics, P. O. Box 9, SF-00014 University of Helsinki (Finland)
2. Nuclear Science Division, Mailstop 70A-3307, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)

Dilepton production associated with minijets is calculated in ultrarelativistic heavy ion collisions using the first order approximation of the dilepton fragmentation functions of quarks and gluons. The full QCD evolution of the fragmentation functions is also studied. We find that the dilepton pairs from the fragmentation of minijets are comparable to direct Drell-Yan production at [radical][ital s] =200[ital A] GeV for small dilepton invariant masses [ital M][similar to]1--2 GeV/[ital c][sup 2] while they are dominant over a large range of mass at [radical][ital s] =6400[ital A] GeV.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5073384
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 49:9; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
FRAGMENTATION
GLUONS
HEAVY ION REACTIONS
INTERACTIONS
JET MODEL
LEPTONS
MATHEMATICAL MODELS
NUCLEAR REACTIONS
PAIR PRODUCTION
PARTICLE MODELS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RELATIVISTIC RANGE