The NNLO quark beam function for jet-veto resummation
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 fram...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
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SpringerOpen
2023-01-01
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Series: | Journal of High Energy Physics |
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Online Access: | https://doi.org/10.1007/JHEP01(2023)083 |
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author | Guido Bell Kevin Brune Goutam Das Marcel Wald |
author_facet | Guido Bell Kevin Brune Goutam Das Marcel Wald |
author_sort | Guido Bell |
collection | DOAJ |
description | 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. |
first_indexed | 2024-04-09T15:13:09Z |
format | Article |
id | doaj.art-a4ab98defa8545268aa46dcbacd2d722 |
institution | Directory Open Access Journal |
issn | 1029-8479 |
language | English |
last_indexed | 2024-04-09T15:13:09Z |
publishDate | 2023-01-01 |
publisher | SpringerOpen |
record_format | Article |
series | Journal of High Energy Physics |
spelling | doaj.art-a4ab98defa8545268aa46dcbacd2d7222023-04-30T11:04:56ZengSpringerOpenJournal of High Energy Physics1029-84792023-01-012023111910.1007/JHEP01(2023)083The NNLO quark beam function for jet-veto resummationGuido Bell0Kevin Brune1Goutam Das2Marcel Wald3Theoretische Physik 1, Center for Particle Physics Siegen, Universität SiegenTheoretische Physik 1, Center for Particle Physics Siegen, Universität SiegenTheoretische Physik 1, Center for Particle Physics Siegen, Universität SiegenTheoretische Physik 1, Center for Particle Physics Siegen, Universität SiegenAbstract 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.https://doi.org/10.1007/JHEP01(2023)083Effective Field Theories of QCDHigher-Order Perturbative Calculations |
spellingShingle | Guido Bell Kevin Brune Goutam Das Marcel Wald The NNLO quark beam function for jet-veto resummation Journal of High Energy Physics Effective Field Theories of QCD Higher-Order Perturbative Calculations |
title | The NNLO quark beam function for jet-veto resummation |
title_full | The NNLO quark beam function for jet-veto resummation |
title_fullStr | The NNLO quark beam function for jet-veto resummation |
title_full_unstemmed | The NNLO quark beam function for jet-veto resummation |
title_short | The NNLO quark beam function for jet-veto resummation |
title_sort | nnlo quark beam function for jet veto resummation |
topic | Effective Field Theories of QCD Higher-Order Perturbative Calculations |
url | https://doi.org/10.1007/JHEP01(2023)083 |
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