Non-global and rapidity logarithms in narrow jet broadening

Becher, Thomas; Rahn, Rudi Michael; Shao, Dingyu (2017). Non-global and rapidity logarithms in narrow jet broadening. Journal of High Energy Physics, 2017(10) Springer 10.1007/JHEP10(2017)030

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We derive an all-order factorization theorem for the narrow jet broadening event shape, a measure of the transverse momentum in jet events. This is a non-global observable which receives logarithmically enhanced contributions associated with the large rapidity difference between soft and collinear radiation and which is also sensitive to soft recoil effects. Our work is the first factorization analysis of an observable of this type and we show that with regard to the non-global nature, the rapidity logarithms do not constitute an essential complication since they can be tied to the jet function, which is the same as for global observables. As a consequence, the leading non-global logarithms in narrow jet broadening are encoded in the same overall factor relevant for the hemisphere soft function and light jet mass.

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; Rahn, Rudi Michael and Shao, Dingyu

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

27 Oct 2017 11:31

Last Modified:

27 Oct 2017 11:31

Publisher DOI:

10.1007/JHEP10(2017)030

ArXiv ID:

1708.04516

BORIS DOI:

10.7892/boris.106393

URI:

https://boris.unibe.ch/id/eprint/106393

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