Preprint/Report

PUBDB-2016-02553

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Systematics of the Multi-Regge Three-Loop Symbol

Bargheer, T. (Corresponding author)DESY*

2016

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Please use a persistent id in citations: doi:10.3204/PUBDB-2016-02553

Report No.: DESY-16-115; arXiv:1606.07640

Abstract: We review the systematics of Mandelstam cut contributions to planar scattering amplitudes in the multi-Regge limit. Isolating the relevant cut terms, we explain how the BFKL expansion can be used to construct the perturbative n-point MHV multi-Regge limit symbol from a finite number of basic building blocks. At three loops and at leading logarithmic order, two building blocks are required. These are extracted from the known three-loop six-point and seven-point symbols for general kinematics. The subleading and sub-subleading terms require two and one further building block, respectively. The latter could either be reconstructed from further perturbative data, or from BFKL integrals involving yet-unknown corrections to the central emission vertex, on whose construction we also briefly comment.

Keyword(s): multi-Regge ; buildings ; BFKL equation ; scattering amplitude ; kinematics

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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. INTGAUGESTRING - Integrable Structures in Supersymmetric Gauge Theory and its String Dual (299865) (299865)

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 Journal Article Bargheer, T. (Corresponding author)DESY*
Systematics of the multi-Regge three-loop symbol
Journal of high energy physics 2017(11), 77 (2017) [10.1007/JHEP11(2017)077]2017     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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