Prompt contributions to the dilepton yield in heavy ion collisions

Authors
Hufner, J Ivanov, YP Kopeliovich, BZ Raufeisen, J
Citation
J. Hufner et al., Prompt contributions to the dilepton yield in heavy ion collisions, EUR PHY J A, 7(3), 2000, pp. 391-396
Citations number
26
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL A
ISSN journal
14346001 → ACNP
Volume
7
Issue
3
Year of publication
2000
Pages
391 - 396
Database
ISI
SICI code
1434-6001(200003)7:3<391:PCTTDY>2.0.ZU;2-T
Abstract
The mass spectrum is calculated for those dileptons which are produced in t he early phase of a heavy ion collisions via the direct production NN --> l (+)l(-)X and via the Compton process GN -->, l(+)l(-)X with prompt gluons r adiated in preceding NN interactions. Both mechanisms produce a mass spectr um which decreases steeply with invariant mass of the l(+)l(-) pair and whi ch is below the CERES data for Pb-Au collisions by about one order of magni tude.