Effective Field Theory for Jet Processes

Becher, Thomas; Neubert, Matthias; Rothen, Lorena; Shao, Dingyu (2016). Effective Field Theory for Jet Processes. Physical review letters, 116(19), p. 192001. American Physical Society 10.1103/PhysRevLett.116.192001

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Processes involving narrow jets receive perturbative corrections enhanced by logarithms of the jet opening angle and the ratio of the energies inside and outside the jets. Analyzing cone-jet processes in effective field theory, we find that in addition to soft and collinear fields their description requires degrees of freedom that are simultaneously soft and collinear to the jets. These collinear-soft particles can resolve individual collinear partons, leading to a complicated multi-Wilson-line structure of the associated operators at higher orders. Our effective field theory provides, for the first time, a factorization formula for a cone-jet process, which fully separates the physics at different energy scales. Its renormalization-group equations control all logarithmically enhanced higher-order terms, in particular also the nonglobal logarithms.

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; Rothen, Lorena and Shao, Dingyu

Subjects:

500 Science > 530 Physics

ISSN:

0031-9007

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

22 Aug 2016 13:03

Last Modified:

22 Aug 2016 13:03

Publisher DOI:

10.1103/PhysRevLett.116.192001

ArXiv ID:

1508.06645

BORIS DOI:

10.7892/boris.86086

URI:

https://boris.unibe.ch/id/eprint/86086

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