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Boosted top production: factorization and resummation for single-particle inclusive distributions

Ferroglia, Andrea; Marzani, Simone; Pecjak, Ben D.; Yang, Li Lin

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Authors

Andrea Ferroglia

Simone Marzani

Li Lin Yang



Abstract

We study single-particle inclusive (1PI) distributions in top-quark pair production at hadron colliders, working in the highly boosted regime where the top-quark p T is much larger than its mass. In particular, we derive a novel factorization formula valid in the small-mass and soft limits of the differential partonic cross section. This provides a framework for the simultaneous resummation of soft gluon corrections and small-mass logarithms, and also an efficient means of obtaining higher-order corrections to the differential cross section in this limit. The result involves five distinct one-scale functions, three of which arise through the subfactorization of soft real radiation in the small-mass limit. We list the NNLO corrections to each of these functions, building on results in the literature by performing a new calculation of a soft function involving four light-like Wilson lines to this order. We thus obtain a nearly complete description of the small-mass limit of the differential partonic cross section at NNLO near threshold, missing only terms involving closed top-quark loops in the virtual corrections.

Citation

Ferroglia, A., Marzani, S., Pecjak, B. D., & Yang, L. L. (2014). Boosted top production: factorization and resummation for single-particle inclusive distributions. Journal of High Energy Physics, 2014(1), Article 028. https://doi.org/10.1007/jhep01%282014%29028

Journal Article Type Article
Acceptance Date Dec 14, 2013
Online Publication Date Jan 8, 2014
Publication Date Jan 8, 2014
Deposit Date Dec 9, 2015
Publicly Available Date Apr 22, 2016
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Electronic ISSN 1029-8479
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2014
Issue 1
Article Number 028
DOI https://doi.org/10.1007/jhep01%282014%29028
Public URL https://durham-repository.worktribe.com/output/1416896
Related Public URLs http://arxiv.org/abs/1310.3836

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Open Access, © The Authors. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.






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