Factorization for the light-jet mass and hemisphere soft function

Becher, Thomas; Pecjak, Benjamin D.; Shao, Dingyu (2016). Factorization for the light-jet mass and hemisphere soft function. Journal of High Energy Physics, 2016(12) Springer 10.1007/JHEP12(2016)018

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Becher, Thomas and Shao, Dingyu

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

08 Feb 2017 16:47

Last Modified:

12 Feb 2017 02:11

Publisher DOI:

10.1007/JHEP12(2016)018

BORIS DOI:

10.7892/boris.91496

URI:

https://boris.unibe.ch/id/eprint/91496

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