Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3206
Title: Properties of g ›b b at small opening angles in pp collisions with the ATLAS detector at ?s=13 TeV
Authors: The ATLAS Collaboration
Sultansoy, Saleh
Keywords: Collisions 
 jets 
proton–proton collisions
Issue Date: 2019
Publisher: American Physical Society
Source: ATLAS CollaborationH. (2019). Properties of g? b b¯ at small opening angles in p p collisions with the ATLAS detector at s= 13 TeV. Physical Review D, 99(5), 052004.
Abstract: 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→bb process are measured using 33 fb-1 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-kt 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. © 2019 CERN.
URI: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.052004
https://hdl.handle.net/20.500.11851/3206
ISSN: 24700010
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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