An optimal observable for color singlet identification

Buckley, Andy; Callea, Giuseppe; Larkoski, Andrew J.; Marzani, Simone

doi:10.21468/SciPostPhys.9.2.026

SciPost Physics

An optimal observable for color singlet identification

Andy Buckley, Giuseppe Callea, Andrew J. Larkoski, Simone Marzani

SciPost Phys. 9, 026 (2020) · published 26 August 2020

doi: 10.21468/SciPostPhys.9.2.026
pdf
Submissions/Reports

Abstract

We present a novel approach to construct a color tagger, i.e. an observable that is able to discriminate the decay of a color-singlet into two jets from a two-jet background in a different color configuration. We do this by explicitly taking the ratio of the corresponding leading-order matrix elements in the soft limit, thus obtaining an observable that is provably optimal within our approximation. We call this observable the "jet color ring" and we compare its performance to other color-sensitive observables such as jet pull and dipolarity. We also assess the performance of the jet color ring in simulations by applying it to the case of the hadronic decays of a boosted Higgs boson and of an electroweak boson.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.9.2.026
TI  - An optimal observable for color singlet identification
PY  - 2020/08/26
UR  - https://scipost.org/SciPostPhys.9.2.026
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 9
IS  - 2
SP  - 026
A1  - Buckley, Andy
AU  - Callea, Giuseppe
AU  - Larkoski, Andrew J.
AU  - Marzani, Simone
AB  - We present a novel approach to construct a color tagger, i.e. an observable that is able to discriminate the decay of a color-singlet into two jets from a two-jet background in a different color configuration. We do this by explicitly taking the ratio of the corresponding leading-order matrix elements in the soft limit, thus obtaining an observable that is provably optimal within our approximation. We call this observable the "jet color ring" and we compare its performance to other color-sensitive observables such as jet pull and dipolarity. We also assess the performance of the jet color ring in simulations by applying it to the case of the hadronic decays of a boosted Higgs boson and of an electroweak boson.
ER  -

@Article{10.21468/SciPostPhys.9.2.026,
	title={{An optimal observable for color singlet identification}},
	author={Andy Buckley and Giuseppe Callea and Andrew J. Larkoski and Simone Marzani},
	journal={SciPost Phys.},
	volume={9},
	pages={026},
	year={2020},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.9.2.026},
	url={https://scipost.org/10.21468/SciPostPhys.9.2.026},
}

Cited by 13

Ontology / Topics

See full Ontology or Topics database.

Higgs boson Jets Tagging

Authors / Affiliations: mappings to Contributors and Organizations

See all Organizations.

Funders for the research work leading to this publication

Horizon 2020 (through Organization: European Commission [EC])
Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR) (through Organization: Ministero dell'Istruzione, dell'Università e della Ricerca / Ministry of Education, Universities and Research [MIUR])
Royal Society
Science and Technology Facilities Council [STFC]
Università degli Studi di Genova / University of Genoa [UniGe]