Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV

The fragmentation of high-energy gluons at small opening angles is largely unconstrained by present measurements. Gluon splitting to b-quark pairs is a unique probe into the properties of gluon fragmentation because identified b-tagged jets provide a proxy for the quark daughters of the initial gluo...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Física
Ciencias Exactas
gluons
la̵rge hadron collider
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80983
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80983
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Ciencias Exactas
gluons
la̵rge hadron collider
spellingShingle Física
Ciencias Exactas
gluons
la̵rge hadron collider
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV
topic_facet Física
Ciencias Exactas
gluons
la̵rge hadron collider
description The fragmentation of high-energy gluons at small opening angles is largely unconstrained by present measurements. Gluon splitting to b-quark pairs is a unique probe into the properties of gluon fragmentation because identified b-tagged jets provide a proxy for the quark daughters of the initial gluon. In this study, key differential distributions related to the g → b͞b process are measured using 33 fb<sup>-1</sup> of √s = 13 TeV pp collision data recorded by the ATLAS experiment at the LHC in 2016. Jets constructed from charged-particle tracks, clustered with the anti-k<sub>t</sub> jet algorithm with radius parameter R = 0.2, are used to probe angular scales below the R = 0.4 jet radius. The observables are unfolded to particle level in order to facilitate direct comparisons with predictions from present and future simulations. Multiple significant differences are observed between the data and parton shower Monte Carlo predictions, providing input to improve these predictions of the main source of background events in analyses involving boosted Higgs bosons decaying into b-quarks.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV
title_short Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV
title_full Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV
title_fullStr Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV
title_full_unstemmed Properties of g → b͞b at small opening angles in pp collisions with the ATLAS detector at √s = 13 TeV
title_sort properties of g → b͞b at small opening angles in pp collisions with the atlas detector at √s = 13 tev
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/80983
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