Constituent-Quark Model of Nucleon and O+U→μμ+X Processes

Mo Wenling; He Zhenmin; Duan Chungui; Peng Hongan

Chinese Physics C> 1994, Vol. 18> Issue(3) : 282-288

Constituent-Quark Model of Nucleon and O+U→μμ+X Processes

Section of Physics, Tang Shan Engineering Technology Institute, Tangshan 063002 Department of Physics Hebei Teachers' University, Shijiazhuang 0500163 Department of Physics, Peking University, Beijing 100871

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Abstract：
In this paper using constituent-quark model of nucleon we have calculated nucleon structure functions of Oxygen nucleus and Uranium nucleus, and with which we have analysed O+U→μμ+X Drell-Yan processes. The evaluated cross sections are in good agreement with recent data of the NA38 Group. We have shown the total influence of all nuclear effects acting on these cross sections could change its magnitude even about 15%, thus the nuclear effects should not be neglected when discussing problems such as searching quark gluon plasma in the suppression phenomenon of J/ψ yields. Further more, phenomenological analysis shows that the K factor which characterizes contribution of perturbative QCD in this process decreases slowly as the lepton pair mass m increases, which is consistent with asymptotic freedom of QCD and agrees with previous results on this problem.

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Mo Wenling, He Zhenmin, Duan Chungui and Peng Hongan. Constituent-Quark Model of Nucleon and O+U→μμ+X Processes[J]. Chinese Physics C, 1994, 18(3): 282-288.

Mo Wenling, He Zhenmin, Duan Chungui and Peng Hongan. Constituent-Quark Model of Nucleon and O+U→μμ+X Processes[J]. Chinese Physics C, 1994, 18(3): 282-288. shu

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Received: 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

Constituent-Quark Model of Nucleon and O+U→μμ+X Processes

Corresponding author: Mo Wenling,

Section of Physics, Tang Shan Engineering Technology Institute, Tangshan 063002 Department of Physics Hebei Teachers' University, Shijiazhuang 0500163 Department of Physics, Peking University, Beijing 100871

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1994-03-05

Abstract: In this paper using constituent-quark model of nucleon we have calculated nucleon structure functions of Oxygen nucleus and Uranium nucleus, and with which we have analysed O+U→μμ+X Drell-Yan processes. The evaluated cross sections are in good agreement with recent data of the NA38 Group. We have shown the total influence of all nuclear effects acting on these cross sections could change its magnitude even about 15%, thus the nuclear effects should not be neglected when discussing problems such as searching quark gluon plasma in the suppression phenomenon of J/ψ yields. Further more, phenomenological analysis shows that the K factor which characterizes contribution of perturbative QCD in this process decreases slowly as the lepton pair mass m increases, which is consistent with asymptotic freedom of QCD and agrees with previous results on this problem.

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Constituent-Quark Model of Nucleon and O+U→μμ+X Processes

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