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arXiv · 2202.02913

Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair

Jiaqi Chen·Chichuan Ma·Guoxing Wang·Li Lin Yang·Xiaoping Ye
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Abstract

The associated production of a Higgs boson and a top-quark pair is important for probing the Yukawa coupling of the top quark, and calls for better theoretical modeling. In this paper, we calculate the two-loop infrared divergences in $t\bar{t}H$ production at hadron colliders. To do that we compute the one-loop amplitudes to higher orders in the dimensional regulator $\epsilon$. Numeric results for the infrared poles are given as a reference at several representative phase-space points. The result in this work servers as a part of the ongoing efforts towards the $t\bar{t}H$ cross sections at the next-to-next-to-leading order.

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Jiaqi Chen, Chichuan Ma, Guoxing Wang, Li Lin Yang, Xiaoping Ye. 2022-02-07. Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair. https://doi.org/10.1007/jhep04(2022)025

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