One-loop QCD contributions to differential cross-sections for Higgs production at N3LO

Journal of High Energy Physics

Caterina Specchia¹  Charalampos Anastasiou¹ 

[1] 0000 0001 2156 2780, grid.5801.c, Institute for Theoretical Physics, ETH Zürich, 8093, Zürich, Switzerland;

关键词: NLO Computations;    QCD Phenomenology;   

DOI  :  10.1007/JHEP05(2019)080

来源: publisher

【 摘 要 】

We present one-loop contributions to the fully differential Higgs boson gluon-fusion cross-section for Higgs production via gluon fusion. Our results constitute a necessary ingredient of a complete N3LO determination of the cross-section. We perform our computation using a subtraction method for the treatment of soft and collinear singularities. We identify the infrared divergent parts in terms of universal splitting and eikonal functions, and demonstrate how phase-space integrations yield poles (up to 1/ε6) in the dimensional regulator ε = (4 − d)/2. We compute the coefficients of the ε expansion, including the finite part numerically. As a demonstration of our numerical implementation, we present the corrections at N3LO due to one-loop amplitudes in the rapidity and transverse momentum of the Higgs boson.

【 授权许可】

Unknown