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79598 |
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|a Larkoski, Andrew
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|a Massachusetts Institute of Technology. Center for Theoretical Physics
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|a Larkoski, Andrew
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|a Lopez-Villarejo, J. J.
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|a Skands, P.
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|a Helicity-dependent showers and matching with VINCIA
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|b American Physical Society,
|c 2013-07-12T19:00:38Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/79598
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|a 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.
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|a United States. Dept. of Energy (Contract DE-FG02-05ER41360)
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|a National Science Foundation (U.S.) (Grant NSF-PHY-0969510)
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|a U.S. LHC Theory Initiative
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|a en_US
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|a Article
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|t Physical Review D
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