Suppression of Nuclear Drell-Yan Ratios Due to Energy Loss Effect

  • The energy loss of the quark in the nuclear matter can be well described by the nuclear dependence in the high energy nuclear Drell-Yan process. In terms of the parametrization of the quark energy loss given in the literature and the nuclear parton distribution extracted from the experimental data of the deep inelastic scattering between lepton and nucleus only, the cross section ratios of lepton pair production in the nuclear Drell-Yan process induced by a proton of 800GeV bombarding on various nuclear targets at E772-FNAL are analyzed. It is shown that our results with the energy loss effect are in good agreement with the E772-FNAL data. Therefore, in order to extract the parton distribution functions in nucleus from the experimental data of the Drell-Yan process reliably, the energy loss effect should be taken into account.
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DUAN Chun-Gui, WANG Shuo-He, SHEN Peng-Nian and LI Guang-Lie. Suppression of Nuclear Drell-Yan Ratios Due to Energy Loss Effect[J]. Chinese Physics C, 2006, 30(8): 714-717.
DUAN Chun-Gui, WANG Shuo-He, SHEN Peng-Nian and LI Guang-Lie. Suppression of Nuclear Drell-Yan Ratios Due to Energy Loss Effect[J]. Chinese Physics C, 2006, 30(8): 714-717. shu
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Received: 2006-02-10
Revised: 2006-03-14
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Suppression of Nuclear Drell-Yan Ratios Due to Energy Loss Effect

    Corresponding author: DUAN Chun-Gui,
  • Institute of High Energy Physics, CAS, Beijing 100049, China2 Department of Physics, Hebei Normal University,Shijiazhuang 050016, China3 Electrical Engineering Department, Shijiazhuang Railway Institute, Shijiazhuang 050043, China4 CCASTWorld Laboratory, Beijing 100080, China5 Graduate University of Chinese Academy of Sciences, Beijing 100049, China6 Department of Physics, Nanjing Xiaozhuang College, Nanjing 210017, China7 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China8 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000, China

Abstract: The energy loss of the quark in the nuclear matter can be well described by the nuclear dependence in the high energy nuclear Drell-Yan process. In terms of the parametrization of the quark energy loss given in the literature and the nuclear parton distribution extracted from the experimental data of the deep inelastic scattering between lepton and nucleus only, the cross section ratios of lepton pair production in the nuclear Drell-Yan process induced by a proton of 800GeV bombarding on various nuclear targets at E772-FNAL are analyzed. It is shown that our results with the energy loss effect are in good agreement with the E772-FNAL data. Therefore, in order to extract the parton distribution functions in nucleus from the experimental data of the Drell-Yan process reliably, the energy loss effect should be taken into account.

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