N$^3$LO Higgs boson and Drell-Yan production at threshold: The one-loop two-emission contribution

N$^3$LO Higgs boson and Drell-Yan production at threshold: The one-loop two-emission contribution
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N$^3$LO 希格斯玻色子和 Drell-Yan 产量达到阈值:单环两次发射贡献

DOI:
10.1103/physrevd.90.053006
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发表时间:
2014
期刊:
影响因子:
5
通讯作者:
Hua Xing Zhu
Hua Xing Zhu
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ye Li;A. Manteuffel;R. Schabinger;Hua Xing Zhu

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在本文中,我们研究了无质量QCD中具有唯象意义的软辐射分布。具体地说,我们考虑了从一对类光的威尔逊线发出的两个软部分子的发射,无论是在基本表象中,还是在伴随表象中,都是以次要的顺序进行的。我们的结果是对胶子聚变通道中希格斯玻色子产生和Drell-yan轻子产生的次要顺序阈值修正的重要组成部分。我们的计算与最近发表的希格斯玻色子产生的结果是一致的。作为对我们分析的一个不平凡的交叉验证,我们使用完全不同的策略重新推导出最近对Drell-yan阈值截面的预测。我们的结果是紧凑的,对维正则参数中的所有阶都有效,并且用纯函数表示。
In this paper, we study phenomenologically interesting soft radiation distributions in massless QCD. Specifically, we consider the emission of two soft partons off of a pair of lightlike Wilson lines, in either the fundamental or the adjoint representation, at next-to-leading order. Our results are an essential component of the next-to-next-to-next-to-leading order threshold corrections to both Higgs boson production in the gluon fusion channel and Drell-Yan lepton production. Our calculations are consistent with the recently published results for Higgs boson production. As a nontrivial cross-check on our analysis, we rederive a recent prediction for the Drell-Yan threshold cross section using a completely different strategy. Our results are compact, valid to all orders in the dimensional regularization parameter, and expressed in terms of pure functions.
DOI: 10.1016/j.nuclphysb.2005.01.012
发表时间: 2004-11
期刊: Nuclear Physics
影响因子: --
作者:
M. Czakon
通讯作者: M. Czakon