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Nuclear Shadowing Effect on K Factor in Au-Au Collision
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| HOU Zhao-Yu1,2;ZHENG Qiao3;ZHANG Ben-Ai2 |
| 1Department of Physics, Shijiazhuang Normal College, Shijiazhuang 050801
2Graduate School, Chinese Academy of Engineering Physics, Beijing 100088
3Department of Mathematics and Physics, Shijiazhuang Railway College, Shijiazhuang 050043
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| Cite this article: |
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HOU Zhao-Yu, ZHENG Qiao, ZHANG Ben-Ai 2002 Chin. Phys. Lett. 19 488-491 |
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Abstract We investigate the nuclear shadowing effect on K factor in the Drell-Yan process by introducing a shadowing factor into the corresponding quantum chromodynamical αs order corrections. K factors for Au-Au collision are calculated at the center-of-mass system energies √s = 60, 130 and 200 GeV while the nuclear shadowing factor is taken into account. The numerical results indicate that the nuclear shadowing factor obviously raises the K value in the small x region, and for the same nucleon the K value becomes smaller as the energy increases. Nuclear shadowing effect would be one reason of creating the non-constancy of the K factor.
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| Keywords:
13.60.Hb
13.85.Fb
25.40.Ep
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Published: 01 April 2002
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| PACS: |
13.60.Hb
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(Total and inclusive cross sections (including deep-inelastic processes))
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13.85.Fb
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(Inelastic scattering: two-particle final states)
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25.40.Ep
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(Inelastic proton scattering)
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