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Title: Two-Loop Splitting Amplitudes

Abstract

Splitting amplitudes govern the behavior of scattering amplitudes at the momenta of external legs become collinear. In this talk we outline the calculation of two-loop splitting amplitudes via the unitarity sewing method. This method retains the simple factorization properties of light-cone gauge, but avoids the need for prescriptions such as the principal value or Mandelstam-Leibbrandt ones. The encountered loop momentum integrals are then evaluated using integration-by-parts and Lorentz invariance identities. We outline a variety of applications for these splitting amplitudes.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
827297
Report Number(s):
SLAC-PUB-10525
TRN: US0403231
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 24 Jul 2004
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; FACTORIZATION; LIGHT CONE; LORENTZ INVARIANCE; SCATTERING AMPLITUDES; UNITARITY

Citation Formats

Bern, Z. Two-Loop Splitting Amplitudes. United States: N. p., 2004. Web. doi:10.2172/827297.
Bern, Z. Two-Loop Splitting Amplitudes. United States. doi:10.2172/827297.
Bern, Z. Sat . "Two-Loop Splitting Amplitudes". United States. doi:10.2172/827297. https://www.osti.gov/servlets/purl/827297.
@article{osti_827297,
title = {Two-Loop Splitting Amplitudes},
author = {Bern, Z},
abstractNote = {Splitting amplitudes govern the behavior of scattering amplitudes at the momenta of external legs become collinear. In this talk we outline the calculation of two-loop splitting amplitudes via the unitarity sewing method. This method retains the simple factorization properties of light-cone gauge, but avoids the need for prescriptions such as the principal value or Mandelstam-Leibbrandt ones. The encountered loop momentum integrals are then evaluated using integration-by-parts and Lorentz invariance identities. We outline a variety of applications for these splitting amplitudes.},
doi = {10.2172/827297},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {7}
}

Technical Report:

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