Nuclear Effect in p-A Drell-Yan Process with QCD Corrections

  • Taking into account perturbative QCD αs order approximation, using double Q2 rescaling model, the cross section ratios of Drell Yan process in p-A collision to p-D collision are calculated. Comparing these results with the ratios without QCD corrections, it shows the neclear effect functions RQCD(xA,Q2) are suppressed by different extent for different nucleus, in different ranges of xA(T). Comparing with the E772 experiment data, RQCD(xA,Q2) are better fitted than R(xA, Q2). It is shown that the QCD corrections are interesting in studing the nuclear effect of D-Y process. After taking into account of αs order corrections, double Q2-rescaling model is still effective.
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  • [1] . Stroynowski R .Phys.Rep .,1 981 ,71 ( 1 ) :1 2. Alde D M et al.Phys.Rev .Lett.,1 990 ,64 :2 4 79 3. Kubar andreJ,Meunier J C ,Plaut G .Nucl.Phys.,1 980 ,B1 75:2 514. LIU ChunXiu et al.High Energy Phys.and Nucl.(inChinese) ,2000 ,24( 2 ) :131(刘春秀等 .高能物理与核物理 ,2000 ,24 ( 2 ) :131)5. HE ZhenMin ,YAO XiaoXia,DUAN ChunGui et al.Eur.Phys.J.,1 998,C4 :3 0 16. Gluck M ,Reya E ,Vogt A .Z .Phys.,1995,C67:433
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ZHANG YuMin, DUAN ChunGui, YAN ZhanYuan and HE ZhenMin. Nuclear Effect in p-A Drell-Yan Process with QCD Corrections[J]. Chinese Physics C, 2000, 24(9): 839-844.
ZHANG YuMin, DUAN ChunGui, YAN ZhanYuan and HE ZhenMin. Nuclear Effect in p-A Drell-Yan Process with QCD Corrections[J]. Chinese Physics C, 2000, 24(9): 839-844. shu
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Received: 1999-07-06
Revised: 1900-01-01
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Nuclear Effect in p-A Drell-Yan Process with QCD Corrections

    Corresponding author: ZHANG YuMin,
  • Physics Department, Hebei Teachers' University, Shijiazhuang 050016, China

Abstract: Taking into account perturbative QCD αs order approximation, using double Q2 rescaling model, the cross section ratios of Drell Yan process in p-A collision to p-D collision are calculated. Comparing these results with the ratios without QCD corrections, it shows the neclear effect functions RQCD(xA,Q2) are suppressed by different extent for different nucleus, in different ranges of xA(T). Comparing with the E772 experiment data, RQCD(xA,Q2) are better fitted than R(xA, Q2). It is shown that the QCD corrections are interesting in studing the nuclear effect of D-Y process. After taking into account of αs order corrections, double Q2-rescaling model is still effective.

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