Helicity-dependent showers and matching with VINCIA

Author(s)
Larkoski, Andrew; Lopez-Villarejo, J. J.; Skands, P.
Thumbnail
DownloadLarkoski-2013-Helicity-dependent showers and matching with VINCIA.pdf (885.3Kb)
PUBLISHER_POLICY
Terms of use
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.
Metadata
Show full item record
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.
Date issued
2013-03
URI
http://hdl.handle.net/1721.1/79598
Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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
ISSN
1550-7998
1550-2368
Collections