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arXiv 1008.2652hep-ph
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LHC前向快度下的Drell-Yan过程

Drell-Yan process at forward rapidity at the LHC

Krzysztof Golec-Biernat, Emilia Lewandowska, Anna M. Stasto

摘要:

我们分析了在大型强子对撞机上前向快度下的Drell-Yan轻子对产生。使用偶极框架的截面的计算,我们发现一个显着的抑制相比,共线因式分解公式,由于饱和效应的偶极截面。我们发展了一个以Q_s^2/M^2为幂的扭曲展开式,其中Q_s是饱和标度,M是产生的轻子对的不变质量。对于LHC的名义能量的领导扭转描述是足够的质量下降到6 GeV。在该值以下,较高的扭转项给出显著的贡献。

英文摘要:

We analyze the Drell-Yan lepton pair production at forward rapidity at the Large Hadron Collider. Using the dipole framework for the computation of the cross section we find a significant suppression in comparison to the collinear factorization formula due to saturation effects in the dipole cross section. We develop a twist expansion in powers of Q_s^2/M^2 where Q_s is the saturation scale and M the invariant mass of the produced lepton pair. For the nominal LHC energy the leading twist description is sufficient down to masses of 6 GeV. Below that value the higher twist terms give a significant contribution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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