Preprint/Report

PUBDB-2016-01988

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Factorization and Resummation for Jet Processes

Becher, T. ; Neubert, M. ; Rothen, L. (Corresponding author)DESY* ; Shao, D. Y.

2016

This record in other databases:  

Report No.: DESY-16-052; MITP-16-042; arXiv:1605.02737

Abstract: From a detailed analysis of cone-jet cross sections in effective field theory, we obtain novel factorization theorems which separate the physics associated with different energy scales present in such processes. The relevant low-energy physics is encoded in Wilson lines along the directions of the energetic particles inside the jets. This multi-Wilson-line structure is present even for narrow-cone jets due to the relevance of small-angle soft radiation. We discuss the renormalization-group equations satisfied by these operators. Their solution resums all logarithmically enhanced contributions to such processes, including non-global logarithms. Such logarithms arise in many observables, in particular whenever hard phase-space constraints are imposed, and are not captured with standard resummation techniques. Our formalism provides the basis for higher-order logarithmic resummations of jet and other non-global observables. As a nontrivial consistency check, we use it to obtain explicit two-loop results for all logarithmically enhanced terms in cone-jet cross sections and verify those against numerical fixed-order computations.

Keyword(s): resummation ; factorization ; effective field theory ; renormalization group ; higher-order ; small-angle ; phase space ; Wilson loop ; structure

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)
2. EFT4LHC - An Effective Field-Theory Assault on the Zeptometer Scale: Exploring the Origins of Flavour and Electroweak Symmetry Breaking (291144) (291144)
3. TA 867/1-1 - Precision Theory Predictions for Higgs and New-Physics Measurements at the LHC (209838826) (209838826)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2016

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Report/Journal Article Becher, T. (Corresponding author) ; Neubert, M. (Corresponding author) ; Rothen, L. (Corresponding author)DESY* ; Shao, D. Y. (Corresponding author)
Erratum to: Factorization and resummation for jet processes
Journal of high energy physics 1705(05), 154 (2017) [10.1007/JHEP05(2017)154]2017     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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