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Title: Building blocks for subleading helicity operators

Abstract

On-shell helicity methods provide powerful tools for determining scattering amplitudes, which have a one-to-one correspondence with leading power helicity operators in the Soft-Collinear Effective Theory (SCET) away from singular regions of phase space. We show that helicity based operators are also useful for enumerating power suppressed SCET operators, which encode subleading amplitude information about singular limits. In particular, we present a complete set of scalar helicity building blocks that are valid for constructing operators at any order in the SCET power expansion. In conclusion, we also describe an interesting angular momentum selection rule that restricts how these building blocks can be assembled.

Authors:
 [1];  [1];  [1]
  1. Massachusetts Institute of Technology, Cambridge, MA (United States)
Publication Date:
Research Org.:
Massachusetts Institute of Technology, Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1326941
Grant/Contract Number:  
SC0011090
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 5; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Jets

Citation Formats

Kolodrubetz, Daniel W., Moult, Ian, and Stewart, Iain W. Building blocks for subleading helicity operators. United States: N. p., 2016. Web. doi:10.1007/JHEP05(2016)139.
Kolodrubetz, Daniel W., Moult, Ian, & Stewart, Iain W. Building blocks for subleading helicity operators. United States. doi:10.1007/JHEP05(2016)139.
Kolodrubetz, Daniel W., Moult, Ian, and Stewart, Iain W. Tue . "Building blocks for subleading helicity operators". United States. doi:10.1007/JHEP05(2016)139. https://www.osti.gov/servlets/purl/1326941.
@article{osti_1326941,
title = {Building blocks for subleading helicity operators},
author = {Kolodrubetz, Daniel W. and Moult, Ian and Stewart, Iain W.},
abstractNote = {On-shell helicity methods provide powerful tools for determining scattering amplitudes, which have a one-to-one correspondence with leading power helicity operators in the Soft-Collinear Effective Theory (SCET) away from singular regions of phase space. We show that helicity based operators are also useful for enumerating power suppressed SCET operators, which encode subleading amplitude information about singular limits. In particular, we present a complete set of scalar helicity building blocks that are valid for constructing operators at any order in the SCET power expansion. In conclusion, we also describe an interesting angular momentum selection rule that restricts how these building blocks can be assembled.},
doi = {10.1007/JHEP05(2016)139},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2016,
place = {United States},
year = {2016},
month = {5}
}

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Cited by: 5 works
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