Abstract

We consider the quark beam function that describes collinear initial-state radiation that is constrained by a veto on reconstructed jets. As the veto is imposed on the transverse momenta of the jets, the beam function is subject to rapidity divergences, and we use the collinear-anomaly framework to extract the perturbative matching kernels to next-to-next-to-leading order (NNLO) in the strong-coupling expansion. Our calculation is based on a novel framework that automates the computation of beam functions in Mellin space and it provides the ingredients to extend jet-veto resummations for quark-initiated processes to NNLL′ accuracy.

Details

Title
The NNLO quark beam function for jet-veto resummation
Author
Bell, Guido 1 ; Brune, Kevin 1 ; Das, Goutam 1   VIAFID ORCID Logo  ; Wald, Marcel 1 

1  Universität Siegen, Theoretische Physik 1, Center for Particle Physics Siegen, Siegen, Germany (GRID:grid.5836.8) (ISNI:0000 0001 2242 8751) 
Pages
83
Publication year
2023
Publication date
Jan 2023
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/JHEP01(2023)083
ProQuest document ID
2766280451
Copyright
© The Author(s) 2023. 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.