Grooming at the cusp: all-orders predictions for the transition region of jet groomers

Abstract Jet grooming has emerged as a necessary and vital tool for mitigating contamination radiation in jets. The additional restrictions on emissions imposed by the groomer can result in non-smooth behavior of resulting fixed-order distributions of observables measured on groomed jets. As a concr...

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Autores principales:	Kees Benkendorfer, Andrew J. Larkoski
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Jets NLO Computations Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/bacda6a548f04229a3aa8a807d9b3a92
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spelling	oai:doaj.org-article:bacda6a548f04229a3aa8a807d9b3a922021-11-28T12:40:25ZGrooming at the cusp: all-orders predictions for the transition region of jet groomers10.1007/JHEP11(2021)1881029-8479https://doaj.org/article/bacda6a548f04229a3aa8a807d9b3a922021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)188https://doaj.org/toc/1029-8479Abstract Jet grooming has emerged as a necessary and vital tool for mitigating contamination radiation in jets. The additional restrictions on emissions imposed by the groomer can result in non-smooth behavior of resulting fixed-order distributions of observables measured on groomed jets. As a concrete example, we study the cusp in the hemisphere mass distribution of e + e − → hadrons events groomed with soft drop. We identify the leading emissions that contribute in the region about the cusp and formulate an all-orders factorization theorem that describes how the cusp is resolved through arbitrary strongly-ordered soft and collinear emissions. The factorization theorem exhibits numerous novel features such as contributions from collinear modes that can cross hemisphere boundaries as well as requiring explicit subtraction of the limit in which resolved emissions become collinear to the hard core. We present resummation of the cusp region through next-to-leading logarithmic accuracy and describe how it can be matched with established factorization theorems that describe other groomed phase space regions.Kees BenkendorferAndrew J. LarkoskiSpringerOpenarticleJetsNLO ComputationsNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-40 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Jets NLO Computations Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Jets NLO Computations Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Kees Benkendorfer Andrew J. Larkoski Grooming at the cusp: all-orders predictions for the transition region of jet groomers
description	Abstract Jet grooming has emerged as a necessary and vital tool for mitigating contamination radiation in jets. The additional restrictions on emissions imposed by the groomer can result in non-smooth behavior of resulting fixed-order distributions of observables measured on groomed jets. As a concrete example, we study the cusp in the hemisphere mass distribution of e + e − → hadrons events groomed with soft drop. We identify the leading emissions that contribute in the region about the cusp and formulate an all-orders factorization theorem that describes how the cusp is resolved through arbitrary strongly-ordered soft and collinear emissions. The factorization theorem exhibits numerous novel features such as contributions from collinear modes that can cross hemisphere boundaries as well as requiring explicit subtraction of the limit in which resolved emissions become collinear to the hard core. We present resummation of the cusp region through next-to-leading logarithmic accuracy and describe how it can be matched with established factorization theorems that describe other groomed phase space regions.
format	article
author	Kees Benkendorfer Andrew J. Larkoski
author_facet	Kees Benkendorfer Andrew J. Larkoski
author_sort	Kees Benkendorfer
title	Grooming at the cusp: all-orders predictions for the transition region of jet groomers
title_short	Grooming at the cusp: all-orders predictions for the transition region of jet groomers
title_full	Grooming at the cusp: all-orders predictions for the transition region of jet groomers
title_fullStr	Grooming at the cusp: all-orders predictions for the transition region of jet groomers
title_full_unstemmed	Grooming at the cusp: all-orders predictions for the transition region of jet groomers
title_sort	grooming at the cusp: all-orders predictions for the transition region of jet groomers
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/bacda6a548f04229a3aa8a807d9b3a92
work_keys_str_mv	AT keesbenkendorfer groomingatthecuspallorderspredictionsforthetransitionregionofjetgroomers AT andrewjlarkoski groomingatthecuspallorderspredictionsforthetransitionregionofjetgroomers
_version_	1718407854812037120

Grooming at the cusp: all-orders predictions for the transition region of jet groomers

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