| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Production of High-pT Kaon and Pion in pp and Au–Au Collisions by Resolved Photoproduction Processes |
| CAI Yan-Bing1, YANG Hai-Tao2, LI Yun-De1** |
1Department of Physics, Yunnan University, Kunming 650091
2School of Physics and Electronic Information Engineering, Zhaotong University, Zhaotong 657000
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| Cite this article: |
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CAI Yan-Bing, YANG Hai-Tao, LI Yun-De 2015 Chin. Phys. Lett. 32 081201 |
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Abstract Taking into account the effects of shadowing and jet quenching, the large transverse momentum distribution of K+, π+ and K+/π+ ratios at √s=200 GeV originating from resolved photoproduction processes is calculated based on perturbative quantum chromodynamics. It is found that the contribution of K+ and π+ produced by photoproduction processes is evident. The K+/π+ ratios in Au–Au collisions show an obvious enhancement compared with p–p collisions. The numerical results indicate that the photoproduction processes are good modification for kaon and pion production.
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Received: 29 January 2015
Published: 02 September 2015
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| PACS: |
12.39.St
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(Factorization)
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13.60.Le
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(Meson production)
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25.75.-q
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(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
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12.38.Mh
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(Quark-gluon plasma)
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