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NNLO hard functions in massless QCD

Broggio, Alessandro; Ferroglia, Andrea; Pecjak, Ben D.; Zhang, Zhibai

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Authors

Alessandro Broggio

Andrea Ferroglia

Zhibai Zhang



Abstract

We derive the hard functions for all 2 → 2 processes in massless QCD up to next-to-next-to-leading order (NNLO) in the strong coupling constant. By employing the known one- and two-loop helicity amplitudes for these processes, we obtain analytic expressions for the ultraviolet and infrared finite, minimally subtracted hard functions, which are matrices in color space. These hard functions will be useful in carrying out higher-order resummations in processes such as dijet and highly energetic top-quark pair production by means of soft-collinear effective theory methods.

Citation

Broggio, A., Ferroglia, A., Pecjak, B. D., & Zhang, Z. (2014). NNLO hard functions in massless QCD. Journal of High Energy Physics, 2014(12), Article 005. https://doi.org/10.1007/jhep12%282014%29005

Journal Article Type Article
Acceptance Date Nov 5, 2014
Online Publication Date Dec 1, 2014
Publication Date Dec 1, 2014
Deposit Date Dec 9, 2015
Publicly Available Date Apr 22, 2016
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2014
Issue 12
Article Number 005
DOI https://doi.org/10.1007/jhep12%282014%29005
Related Public URLs http://arxiv.org/abs/1409.5294

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Published Journal Article (467 Kb)
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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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