Subleading-colour effects and spin correlations in the PanScales showers

Ludovic Scyboz

doi:10.22323/1.398.0416

Subleading-colour effects and spin correlations in the PanScales showers

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

Abstract

In the context of the PanScales parton shower project, I describe two advances in the development of final-state parton showers with controlled logarithmic accuracy. The first (Ref. [1]) involves simple new algorithms to resolve the long-standing issue of incorrect subleading-colour contributions at leading logarithmic (LL) accuracy in dipole- and antenna-type final-state showers, and also enables the PanScales showers to obtain full-colour NLL accuracy for many observables. The second (Ref. [2]) concerns spin correlations, where we propose a spinor-product based implementation of the well-established Collins algorithm. We verify the logarithmic accuracy of the results with separate purely collinear calculations, using novel spin-sensitive jet observables that are of potential interest also for future experimental measurements.

Original language	English
Title of host publication	Proceedings of Science
Subtitle of host publication	The European Physical Society Conference on High Energy Physics 2021
Editors	Oliver Gerberding, Alexander Glazov
Place of Publication	Italy
Publisher	Sissa Medialab, SRL
Number of pages	6
Volume	398
DOIs	https://doi.org/10.22323/1.398.0416
Publication status	Published - 12 May 2022
Externally published	Yes
Event	European Physical Society Conference on High Energy Physics, 2021 - Virtual, Online Duration: 26 Jul 2021 → 30 Jul 2021 https://www.eps-hep2021.eu/

Publication series

Name	Proceedings of Science
Publisher	Sissa Medialab, SRL
ISSN (Print)	1824-8039

Conference

Conference	European Physical Society Conference on High Energy Physics, 2021
Abbreviated title	EPS-HEP 2021
City	Virtual, Online
Period	26/07/21 → 30/07/21
Other	The European Physical Society Conference on High Energy Physics (EPS-HEP) is one of the major international conferences that reviews the field every second year since 1971 and is organised by the High Energy and Particle Physics Divison of the European Physical Society. The latest conferences in this series were held in Ghent, Venice, Vienna, Stockholm, Grenoble, Krakow, Manchester, Lisbon, Aachen The 2021 European Physical Society conference for high energy physics will follow a purely online format. The organisation of the conference has been hosted jointly by Universität Hamburg and by the research center DESY. The conference will feature plenary, review and parallel sessions covering all major areas and developments in high energy and particle physics, astroparticle physics, neutrino physics and related areas.
Internet address	https://www.eps-hep2021.eu/

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10.22323/1.398.0416Licence: CC BY-NC-ND

Cite this

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abstract = "In the context of the PanScales parton shower project, I describe two advances in the development of final-state parton showers with controlled logarithmic accuracy. The first (Ref. [1]) involves simple new algorithms to resolve the long-standing issue of incorrect subleading-colour contributions at leading logarithmic (LL) accuracy in dipole- and antenna-type final-state showers, and also enables the PanScales showers to obtain full-colour NLL accuracy for many observables. The second (Ref. [2]) concerns spin correlations, where we propose a spinor-product based implementation of the well-established Collins algorithm. We verify the logarithmic accuracy of the results with separate purely collinear calculations, using novel spin-sensitive jet observables that are of potential interest also for future experimental measurements.",

author = "Ludovic Scyboz",

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doi = "10.22323/1.398.0416",

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Scyboz, L 2022, Subleading-colour effects and spin correlations in the PanScales showers. in O Gerberding & A Glazov (eds), Proceedings of Science: The European Physical Society Conference on High Energy Physics 2021. vol. 398, 416, Proceedings of Science, Sissa Medialab, SRL, Italy, European Physical Society Conference on High Energy Physics, 2021, Virtual, Online, 26/07/21. https://doi.org/10.22323/1.398.0416

Subleading-colour effects and spin correlations in the PanScales showers. / Scyboz, Ludovic.
Proceedings of Science: The European Physical Society Conference on High Energy Physics 2021. ed. / Oliver Gerberding; Alexander Glazov. Vol. 398 Italy: Sissa Medialab, SRL, 2022. 416 (Proceedings of Science).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

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Subleading-colour effects and spin correlations in the PanScales showers

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