Helicity-dependent showers and matching with VINCIA
Name
Larkoski-2013-Helicity-dependent showers and matching with VINCIA.pdf
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Author(s)
Larkoski, Andrew
Lopez-Villarejo, J. J.
Skands, P.
Date Issued
March 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Larkoski, A. J., J. J. Lopez-Villarejo, and P. Skands. “Helicity-dependent Showers and Matching with VINCIA.” Physical Review D 87.5 (2013). © 2013 American Physical Society
Version
Final published version
Abstract
We present an antenna shower formalism that includes helicity dependence for massless partons. The formalism applies to both traditional (global) showers and sector-based variants. We combine the shower with vincia’s multiplicative approach to matrix-element matching, generalized to operate on each helicity configuration separately. The result is a substantial gain in computational speed for high parton multiplicities. We present an implementation of both sector and global showers, with min/max variations, and helicity-dependent tree-level matching applied through n≤4 for V/H→qq̅ +n partons and through n≤5 for H→n gluons.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.87.054033
