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arXiv 2011.03193hep-ph
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在次领先阶精度下重夸克极限中高能因子分解内的前向Higgs产生

Forward Higgs production within high energy factorization in the heavy quark limit at next-to-leading order accuracy

Martin Hentschinski, Krzysztof Kutak, Andreas van Hameren

摘要:

我们使用Lipatov的高能量有效作用量来确定下一个领先的顺序修正,以Higgs生产的前向区域内的高能量因式分解利用无限大的质量上限。我们的结果是基于显式计算的实际修正结合虚拟修正确定Nefedov早些时候。作为一个新的元素,我们提供了一个适当的定义所需的下一个到领先的顺序系数内的高能量有效的行动框架,扩展了以前提出的处方。我们进一步提出了一个减法机制,以实现这个系数的真实和虚拟的红外奇异性的存在下,外部的壳腿的稳定取消。除了它的直接的唯象研究,如高能remation的Higgs +喷流配置的相关性,我们的结果将进一步使用的研究在高能极限的横向动量相关的因式分解。

英文摘要:

We use Lipatov's high energy effective action to determine the next-to-leading order corrections to Higgs production in the forward region within high energy factorization making use of the infinite top mass limit. Our result is based on an explicit calculation of real corrections combined with virtual corrections determined earlier by Nefedov. As a new element we provide a proper definition of the desired next-to-leading order coefficient within the high energy effective action framework, extending a previously proposed prescription. We further propose a subtraction mechanism to achieve for this coefficient a stable cancellation of real and virtual infra-red singularities in the presence of external off-shell legs. Apart from its relevance for direct phenomenological studies, such as high energy resummation of Higgs + jet configurations, our result will be further of use for the study of transverse momentum dependent factorization in the high energy limit.

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