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Energy Loss of Fast Quarks in Nuclear Drell-Yan Dimuon Production |
| DUAN Chun-Gui1,2,4;CUI Shu-Wen3;SHEN Peng-Nian2,4;LI Guang-Lie2,4 |
| 1Department of Physics, Hebei Normal University, Shijiazhuang 050016
2Institute of High Energy Physics, Chinese academy of Sciences, Beijing 100039
3Department of Physics, Cangzhou Teachers’College, Cangzhou 061000
4CCAST (World Laboratory), PO Box 8730, Beijing 100080 |
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| Cite this article: |
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DUAN Chun-Gui, CUI Shu-Wen, SHEN Peng-Nian et al 2004 Chin. Phys. Lett. 21 1487-1490 |
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Abstract The energy loss effect in nuclear matter, which is another nuclear effect apart from the nuclear effects on the parton distribution as in the deep inelastic scattering process, can be measured best by the nuclear dependence of the high energy nuclear Drell-Yan process.By means of the quark energy loss parametrization given in literature and the nuclear parton distribution extracted only with lepton-nucleus deep inelastic scattering experimental data, measured Drell-Yan production cross sections are analysed for 800-GeV protons incident on a variety of nuclear targets from FNAL E866. The average energy loss of quarks are given by fitting the Fe/Be and W/Be Drell-Yan cross section ratios versus the incident parton momentum fraction.
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| Keywords:
24.85.+p
13.85.Qk
25.40.-h
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Published: 01 August 2004
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| PACS: |
24.85.+p
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(Quarks, gluons, and QCD in nuclear reactions)
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13.85.Qk
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(Inclusive production with identified leptons, photons, or other nonhadronic particles)
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25.40.-h
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(Nucleon-induced reactions)
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