Two-loop splitting amplitudes and the single-real contribution to inclusive Higgs production at N3LO

Two-loop splitting amplitudes and the single-real contribution to inclusive Higgs production at N3LO
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双环分裂幅度和单实数对 N3LO 包容性希格斯粒子产生的贡献

DOI:
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发表时间:
2014
影响因子:
5.4
通讯作者:
M. Jaquier
M. Jaquier
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
C. Duhr;T. Gehrmann;M. Jaquier

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在两个外部分子共线的极限下,QCD矩阵元的因式分解可以用与过程无关的分裂振幅来描述,它可以在微扰论中系统地展开。在传统的维正则化工作,我们计算所有简单的共线分裂过程,包括subleading项正则化参数的双环分裂振幅。我们的结果,然后推导出一个解析表达式的双圈单实贡献的包容性希格斯玻色子生产胶子融合到四阶(N3LO)微扰QCD。
A bstractThe factorisation of QCD matrix elements in the limit of two external partons becoming collinear is described by process-independent splitting amplitudes, which can be expanded systematically in perturbation theory. Working in conventional dimensional regularisation, we compute the two-loop splitting amplitudes for all simple collinear splitting processes, including subleading terms in the regularisation parameter. Our results are then applied to derive an analytical expression for the two-loop single-real contribution to inclusive Higgs boson production in gluon fusion to fourth order (N3LO) in perturbative QCD.
LHC 中的希格斯玻色子产生:通过 $epsilon$ 阶的 NNLO 部分子截面以及将分裂函数分解为 N$^3$LO 的卷积
DOI: 10.1016/j.physletb.2013.03.003
发表时间: 2013
期刊: Physics Letters B
影响因子: 4.4
作者:
M. Höschele;J. Hoff;A. Pak;M. Steinhauser;T. Ueda
通讯作者: T. Ueda