Measurements of jet observables sensitive to b -quark fragmentation in tt ¯ events at the LHC with the ATLAS detector
Entidad
UAM. Departamento de Física TeóricaEditor
American Physical SocietyFecha de edición
2022-08-09Cita
10.1103/PhysRevD.106.032008
Physical Review D 106.3 (2022): 032008
ISSN
2470-0010 (print); 2470-0029 (online)DOI
10.1103/PhysRevD.106.032008Versión del editor
https://doi.org/10.1103/PhysRevD.106.032008Materias
Boson; Partons; Higgs Bosons; FísicaNota
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMDerechos
© 2022 CERN, for the ATLAS CollaborationResumen
Several observables sensitive to the fragmentation of b quarks into b hadrons are measured using 36 fb-1 of √s = 13 TeV proton-proton collision data collected with the ATLAS detector at the LHC. Jets containing b hadrons are obtained from a sample of dileptonic tt¯ events, and the associated set of charged-particle tracks is separated into those from the primary pp interaction vertex and those from the displaced b-decay secondary vertex. This division is used to construct observables that characterize the longitudinal and transverse momentum distributions of the b hadron within the jet. The measurements have been corrected for detector effects and provide a test of heavy-quark-fragmentation modeling at the LHC in a system where the top-quark decay products are color connected to the proton beam remnants. The unfolded distributions are compared with the predictions of several modern Monte Carlo parton-shower generators and generator tunes, and a wide range of agreement with the data is observed, with p values varying from 5 × 10-4 to 0.98. These measurements complement similar measurements from e+e- collider experiments in which the b quarks originate from a color singlet Z/γ∗
Lista de ficheros
Google Scholar:Aad, G.
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ATLAS Collaboration
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Álvarez Estévez, Manuel
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Barreiro Alonso, Fernando
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Calvente López, Sergio
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Camarero Muñoz, Daniel
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Peso Malagón, José del
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Glasman Kuguel, Claudia Beatriz
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Terrón Cuadrado, Juan
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