On K-Factor's Non-Constancy for the Drell-Yan Process in Carbon-Carbon Nuclear Collision |
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| Authors: | HOU ZhaoYu ZHENG Qiao DUAN ChunGui ZHANG BenAi |
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| Institution: | l. Beijing Postgraduate School, China Academy of Engineering Physics, Beijing 100088, China;
2. Department of Physics, Shijiazhuang Teachers' College, Shijiazhuang 050801, China;
3. Basic Department, Shijiazhuang Railway Institute, Shijiazhuang 050043, China;
4. Department of Physics, Hebei Teachers' University, Shijiazhuang 050016, China |
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| Abstract: | The double Q2-rescaling model is used to compute the change of K-factor with xA2 when the nucleus carbon-nucleus carbon collision occurs at different values of xAl, where x are momentum fraction variables. In the calculation, the contributions of annihilations and Compton scattering have been considered for the Drell-Yan process. The calculated results show that the plots of K-factor versus XA2 are very different for different values of xAl. They are also compared with experimental data, which provides a test to the model of nuclear effect and the QCD theory itself |
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| Keywords: | K-factor Drell-Yan process double Q2-rescaling model |
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