Inclusive and Direct Photons in S + Au Central Collisions at 200A GeV/c

A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study both inclusive photon production and direct photon production in 200A GeV S + Au central collisions. The model takes into account the photon production from the partoni...

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Bibliographic Details
Published in:arXiv.org 1999-04
Main Authors: Wang, Hui, Ben-Hao, Sa, An, Tai, Zu-Xun, Sun
Format: Article
Language:English
Subjects:
Collisions
Decay
Photons
Quantum chromodynamics
Scattering
Transverse momentum
Online Access:Get full text
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Summary:A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study both inclusive photon production and direct photon production in 200A GeV S + Au central collisions. The model takes into account the photon production from the partonic QCD scattering process, the hadronic final-state interaction, and the hadronic decay and deals with them consistently. The results of JPCIAE model reproduce successfully both the WA93 data of low p_T inclusive photon distribution and the WA80 data of transverse momentum dependent upper limit of direct photon. The photon production from different decay channels is investigated for both direct and inclusive photons. We have discussed the effects of the partonic QCD scattering and the hadronic final-state interaction on direct photon production as well.
ISSN:2331-8422
DOI:10.48550/arxiv.9904035