Next-to-Leading Order QCD Corrections to Energy Loss Effect in Drell-Yan Process

WANG Hong-Min; SUN Xian-Jing; HOU Zhao-Yu

Chinese Physics C> 2006, Vol. 30> Issue(7) : 628-632

Next-to-Leading Order QCD Corrections to Energy Loss Effect in Drell-Yan Process

Physics Department, Academy of Armored Forces Engineering of PLA, Beijing 100072, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 Physics Graduate School, Shijiazhuang Railway Institute 050043, China

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In this paper, by means of the nuclear parton distribution obtained from the DGLAP equation, taking into account the energy loss of the beam proton through the nucleus, we analyze the QCD corrections to the measured Drell-Yan production cross sections for an 800GeV proton beam incident on Be, Fe and W nuclear targets in the Glauber model. For the nuclear parton distribution being extracted from the leading order, the results show that the QCD corrections can't improve the theoretical results fitting to the experimental data, especially in the cross section ratio of p-W to p-Be verse x₁. Then we calculate the Drell-Yan cross sections using the shadowing effect, which is extracted from the next-to-leading order by Frankfurt et al., and find that direct photon production should be sensitive to energy loss in Compton scattering and annihilation process.

References

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WANG Hong-Min, SUN Xian-Jing and HOU Zhao-Yu. Next-to-Leading Order QCD Corrections to Energy Loss Effect in Drell-Yan Process[J]. Chinese Physics C, 2006, 30(7): 628-632.

WANG Hong-Min, SUN Xian-Jing and HOU Zhao-Yu. Next-to-Leading Order QCD Corrections to Energy Loss Effect in Drell-Yan Process[J]. Chinese Physics C, 2006, 30(7): 628-632. shu

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Received: 2005-10-24
Revised: 2006-02-20

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沈阳化工大学材料科学与工程学院沈阳 110142

Next-to-Leading Order QCD Corrections to Energy Loss Effect in Drell-Yan Process

Corresponding author: WANG Hong-Min,

Physics Department, Academy of Armored Forces Engineering of PLA, Beijing 100072, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 Physics Graduate School, Shijiazhuang Railway Institute 050043, China

Received Date: 2005-10-24

Accepted Date: 2006-02-20

Available Online: 2006-07-05

Abstract: In this paper, by means of the nuclear parton distribution obtained from the DGLAP equation, taking into account the energy loss of the beam proton through the nucleus, we analyze the QCD corrections to the measured Drell-Yan production cross sections for an 800GeV proton beam incident on Be, Fe and W nuclear targets in the Glauber model. For the nuclear parton distribution being extracted from the leading order, the results show that the QCD corrections can't improve the theoretical results fitting to the experimental data, especially in the cross section ratio of p-W to p-Be verse x₁. Then we calculate the Drell-Yan cross sections using the shadowing effect, which is extracted from the next-to-leading order by Frankfurt et al., and find that direct photon production should be sensitive to energy loss in Compton scattering and annihilation process.

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Next-to-Leading Order QCD Corrections to Energy Loss Effect in Drell-Yan Process

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