Low PT Enhancement of Photon Production in 200 A GeV S+ An Collisions

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WANG Hui, SA BenHao and TAI An. Low PT Enhancement of Photon Production in 200 A GeV S+ An Collisions[J]. Chinese Physics C, 2000, 24(3): 220-224.
WANG Hui, SA BenHao and TAI An. Low PT Enhancement of Photon Production in 200 A GeV S+ An Collisions[J]. Chinese Physics C, 2000, 24(3): 220-224. shu
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Received: 1999-02-08
Revised: 1900-01-01
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Low PT Enhancement of Photon Production in 200 A GeV S+ An Collisions

    Corresponding author: WANG Hui,
  • China Institute of Atomic Energy, Beijing 102413, China1 Institute of High Energy Physics, CAS, Beijing 100039, China

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 + An 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 PT enhancement. We have compared the contributions from different decay channels and discussed the role played by rescattering.

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