Preprint/Internal Report

PUBDB-2015-01994

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Effects of Subleading Color in a Parton Shower

Nagy, Z. (Corresponding Author)DESY* ; Soper, D. E.

2015

This record in other databases:  

Report No.: DESY-14-250; arXiv:1501.00778

Abstract: Parton shower Monte Carlo event generators in which the shower evolves from hard splittings to soft splittings generally use the leading color (LC) approximation, which is the leading term in an expansion in powers of $1/N_\Lc^2$, where $N_\Lc = 3$ is the number of colors. In the parton shower event generator \textsc{Deductor}, we have introduced a more general approximation, the LC+ approximation, that includes some of the color suppressed contributions. In this paper, we explore the differences in results between the LC approximation and the LC+ approximation. Numerical comparisons suggest that, for simple observables, the LC approximation is quite accurate. We also find evidence that for gap-between-jets cross sections neither the LC approximation nor the LC+ approximation is adequate.

Keyword(s): parton: showers ; color ; numerical calculations ; Monte Carlo ; splitting ; suppression ; quantum chromodynamics: perturbation theory

Note: OA

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2015

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Report/Journal Article Nagy, Z. (Corresponding author)DESY* ; Soper, D. E.
Effects of subleading color in a parton shower
Journal of high energy physics 1507(7), 119 (2015) [10.1007/JHEP07(2015)119]2015     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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