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

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

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 compu...

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Veröffentlicht in:arXiv.org 2022-09
Hauptverfasser: Chen, Jiaqi, Ma, Chichuan, Wang, Guoxing, Li Lin Yang, Ye, Xiaoping
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Higgs bosons
Physics - High Energy Physics - Phenomenology
Physics - High Energy Physics - Theory
Quarks
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Ma, Chichuan
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Li Lin Yang
Ye, Xiaoping
description 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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subjects Higgs bosons
Physics - High Energy Physics - Phenomenology
Physics - High Energy Physics - Theory
Quarks
title Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair
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