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Low p(T) enhancement of photon production in 200 A GeV S+Au collisions

H Wang, BH Sa, 台安, A. Tai

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Abstract

A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study the photon production of 200 A GeV S+Au central collisions. The model takes into account photon produced from the partonic QCD scattering processe, the final-state hadronic interaction, and hadronic decay and deals with them consistently. The results of JPCIAE model reproduce successfully the WA93 data of low P-T enhancement. We have compared the contributions from different decay channels and discussed the role played by rescattering.

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What this paper is about

A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study the photon production of 200 A GeV S+Au central collisions. The model takes into account photon produced from the partonic QCD scattering processe, the final-state hadronic interaction, and hadronic decay and deals with them consistently. The results of JPCIAE model reproduce successfully the WA93 data of low P-T enhancement. We have compared the contributions from different decay channels and discussed the role played by rescattering.

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Available abstract

A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study the photon production of 200 A GeV S+Au central collisions. The model takes into account photon produced from the partonic QCD scattering processe, the final-state hadronic interaction, and hadronic decay and deals with them consistently. The results of JPCIAE model reproduce successfully the WA93 data of low P-T enhancement. We have compared the contributions from different decay channels and discussed the role played by rescattering.

Key concepts: Physics, Hadron, Event generator, String (physics), Particle physics, Cascade, Photon, Nuclear physics

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