Comments on a new 'full colour' parton shower

Jack Holguin; Jeffrey Forshaw; Simon Plätzer

Comments on a new 'full colour' parton shower

Jack Holguin, Jeffrey Forshaw, Simon Plätzer

Universitat Wien

Research output: Other contribution

Abstract

A new parton shower algorithm has been presented with the claim of providing soft-gluon resummation at `full colour' (arXiv:2001.11492). In this paper we show that the algorithm does not succeed in this goal. We show that full colour accuracy requires the Sudakov factors to be defined at amplitude level and that the simple parton-shower unitarity argument employed in arXiv:2001.11492 is not sufficient.

Original language	Undefined
Number of pages	7
Publication status	Published - 13 Mar 2020

Cite this

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title = "Comments on a new 'full colour' parton shower",

abstract = "A new parton shower algorithm has been presented with the claim of providing soft-gluon resummation at `full colour' (arXiv:2001.11492). In this paper we show that the algorithm does not succeed in this goal. We show that full colour accuracy requires the Sudakov factors to be defined at amplitude level and that the simple parton-shower unitarity argument employed in arXiv:2001.11492 is not sufficient.",

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AU - Forshaw, Jeffrey

AU - Plätzer, Simon

PY - 2020/3/13

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N2 - A new parton shower algorithm has been presented with the claim of providing soft-gluon resummation at `full colour' (arXiv:2001.11492). In this paper we show that the algorithm does not succeed in this goal. We show that full colour accuracy requires the Sudakov factors to be defined at amplitude level and that the simple parton-shower unitarity argument employed in arXiv:2001.11492 is not sufficient.

AB - A new parton shower algorithm has been presented with the claim of providing soft-gluon resummation at `full colour' (arXiv:2001.11492). In this paper we show that the algorithm does not succeed in this goal. We show that full colour accuracy requires the Sudakov factors to be defined at amplitude level and that the simple parton-shower unitarity argument employed in arXiv:2001.11492 is not sufficient.

M3 - Other contribution

ER -