Thomas Becher
Factorization for the light-jet mass and hemisphere soft function
Becher, Thomas; Pecjak, Benjamin D.; Shao, Ding Yu
Abstract
Many collider observables suffer from non-global logarithms not captured by standard resummation techniques. Classic examples are the light-jet mass event shape in the limit of small mass and the related hemisphere soft function. We derive factorization formulas for both of these and explicitly demonstrate that they capture all logarithms present at NNLO. These formulas achieve full scale separation and provide the basis for all-order resummations. A characteristic feature of non-global observables is that the soft radiation is driven by multi-Wilson-line operators, and the ones arising here map onto those relevant for the case of narrow-cone jet cross sections. Numerically, the contributions of non-global logarithms to resummed hemisphere-mass event shapes are sizeable.
Citation
Becher, T., Pecjak, B. D., & Shao, D. Y. (2016). Factorization for the light-jet mass and hemisphere soft function. Journal of High Energy Physics, 2016(12), Article 18. https://doi.org/10.1007/jhep12%282016%29018
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 16, 2016 |
Online Publication Date | Dec 5, 2016 |
Publication Date | Dec 5, 2016 |
Deposit Date | Jan 18, 2017 |
Publicly Available Date | Jan 27, 2017 |
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 | 2016 |
Issue | 12 |
Article Number | 18 |
DOI | https://doi.org/10.1007/jhep12%282016%29018 |
Public URL | https://durham-repository.worktribe.com/output/1388427 |
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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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