Helicity-dependent showers and matching with VINCIA

A. J. Larkoski; J. J. Lopez-Villarejo; P. Skands

doi:10.1103/PhysRevD.87.054033

Helicity-dependent showers and matching with VINCIA

A. J. Larkoski, J. J. Lopez-Villarejo, P. Skands

Research output: Contribution to journal › Article › Research › peer-review

22 Citations (Scopus)

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→qq̄+n partons and through n≤5 for H→n gluons.

Original language	English
Article number	054033
Journal	Physical Review D
Volume	87
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.87.054033
Publication status	Published - 26 Mar 2013
Externally published	Yes

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10.1103/PhysRevD.87.054033

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title = "Helicity-dependent showers and matching with VINCIA",

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AU - Lopez-Villarejo, J. J.

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Helicity-dependent showers and matching with VINCIA

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