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arXiv 1111.4810hep-ph
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在NNLO的pQCD中进行天线减法

Antenna Subtraction in pQCD at NNLO

James Currie

摘要:

在这篇演讲中,我讨论了在微扰QCD中分离喷流截面红外(IR)奇异性的天线减法。将该方法应用于LHC强子碰撞双喷流产生的次-次-领先阶(NNLO)计算。考虑了对双喷流截面的双重真实辐射修正,并检查了它们的红外行为。利用天线相减法构造了红外相减项,以吸收相空间单分辨区和双分辨区中截面的数值发散。矩阵元素和天线功能的图形表示与具体的例子,如何这样的图可以在实际计算中使用。

英文摘要:

In this talk I discuss the antenna subtraction method for isolating infrared (IR) singularities of jet cross sections in perturbative QCD. The method is applied at next-to-next-to-leading order (NNLO) to dijet production in hadron collisions at the LHC. The double real radiative corrections to the dijet cross section are considered and their IR behaviour is examined. IR subtraction terms are constructed to absorb numerical divergences of the cross section in the single and double unresolved regions of phase space using the antenna subtraction method. A pictorial representation of matrix elements and antenna functions is presented with specific examples of how such diagrams can be used in practical calculations.

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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