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 tt¯H production at hadron colliders. To do that we compute the one-loop amplitudes to higher orders in the dimensional regulator ϵ. Numeric results for the infrared poles are given as a reference at several representative phase-space points. The result in this work serves as a part of the ongoing efforts towards the tt¯H cross sections at the next-to-next-to-leading order.

Details

Title
Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair
Author
Chen, Jiaqi 1 ; Ma, Chichuan 2 ; Wang, Guoxing 3 ; Yang, Li Lin 4 ; Ye, Xiaoping 2 

 Chinese Academy of Sciences, Institute of High Energy Physics, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
 Peking University, School of Physics and State Key Laboratory of Nuclear Physics and Technology, Beijing, China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) 
 Zhejiang University, Zhejiang Institute of Modern Physics, School of Physics, Hangzhou, China (GRID:grid.13402.34) (ISNI:0000 0004 1759 700X); University of Amsterdam, Institute for Theoretical Physics Amsterdam and Delta Institute for Theoretical Physics, Amsterdam, Netherlands (GRID:grid.7177.6) (ISNI:0000000084992262); Nikhef, Theory Group, Amsterdam, Netherlands (GRID:grid.420012.5) (ISNI:0000 0004 0646 2193) 
 Zhejiang University, Zhejiang Institute of Modern Physics, School of Physics, Hangzhou, China (GRID:grid.13402.34) (ISNI:0000 0004 1759 700X) 
Pages
25
Publication year
2022
Publication date
Apr 2022
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2648325633
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.