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arXiv 1609.07112hep-phhep-ex
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SCET内的半包容射流截面

Semi-inclusive jet cross sections within SCET

Zhong-Bo Kang, Felix Ringer, Ivan Vitev

摘要:

本文综述了软共线有效理论(SCET)中半包容射流函数的定义及其在包容射流截面中的应用。作为一个例子,我们考虑了质子-质子碰撞中包含的射流产生和射流碎裂函数。半包容喷流函数满足重整化群(RG)方程,该方程采用标准类时DGT演化方程的形式,类似于共线碎裂函数。通过求解这些RG方程,可以实现对潜在的大的单个矩阵$(α_s \ln R)^n$的重新计算。我们目前的数值计算结果在NLO+NLL $_R$精度和现有的数据从大型强子对撞机进行比较。

英文摘要:

We review the definition of semi-inclusive jet functions within Soft Collinear Effective Theory (SCET) and their application to inclusive jet cross sections. As an example, we consider both the inclusive production of jets and the jet fragmentation function in proton-proton collisions. The semi-inclusive jet functions satisfy renormalization group (RG) equations which take the form of standard timelike DGLAP evolution equations, analogous to collinear fragmentation functions. By solving these RG equations, the resummation of potentially large single logarithms $(α_s \ln R)^n$ can be achieved. We present numerical results at NLO+NLL$_R$ accuracy and compare to existing data from the LHC.

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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