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

WANG Hui; SA BenHao; TAI An

Chinese Physics C> 2000, Vol. 24> Issue(3) : 220-224

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

China Institute of Atomic Energy, Beijing 102413, China1 Institute of High Energy Physics, CAS, Beijing 100039, China

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

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 1999-02-08
Accepted Date: 1900-01-01
Available Online: 2000-03-05

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