Logarithmic accuracy of angular-ordered parton showers

Gavin Bewick; Silvia Ferrario Ravasio; Peter Richardson; Michael H. Seymour

doi:10.1007/JHEP04(2020)019

Logarithmic accuracy of angular-ordered parton showers

Gavin Bewick, Silvia Ferrario Ravasio, Peter Richardson, Michael H. Seymour

Theoretical Physics Group

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

Abstract

We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e⁺e⁻ event shapes in the non-logarithmic region is significantly improved.

Original language	English
Article number	19
Journal	Journal of High Energy Physics
Volume	2020
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2020)019
Publication status	Published - 3 Apr 2020

Keywords

Jets
QCD Phenomenology

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10.1007/JHEP04(2020)019

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title = "Logarithmic accuracy of angular-ordered parton showers",

abstract = "We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e+e− event shapes in the non-logarithmic region is significantly improved.",

keywords = "Jets, QCD Phenomenology",

author = "Gavin Bewick and Ravasio, {Silvia Ferrario} and Peter Richardson and Seymour, {Michael H.}",

year = "2020",

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doi = "10.1007/JHEP04(2020)019",

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AU - Bewick, Gavin

AU - Ravasio, Silvia Ferrario

AU - Richardson, Peter

AU - Seymour, Michael H.

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N2 - We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e+e− event shapes in the non-logarithmic region is significantly improved.

AB - We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e+e− event shapes in the non-logarithmic region is significantly improved.

KW - Jets

KW - QCD Phenomenology

U2 - 10.1007/JHEP04(2020)019

DO - 10.1007/JHEP04(2020)019

M3 - Article

AN - SCOPUS:85083270442

VL - 2020

JO - The Journal of High Energy Physics

JF - The Journal of High Energy Physics

SN - 1126-6708

IS - 4

M1 - 19

ER -

Logarithmic accuracy of angular-ordered parton showers

Abstract

Keywords

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