Observation of the L0b --> J/psLf decay in proton-proton collisions at Vs= 13 TeV

Sirunyan, A.M.; Cabrillo Bartolomé, José Ibán; Calderón Tazón, Alicia; Chazin Quero, Bárbara; Duarte Campderros, Jorge; Fernández García, Marcos; Fernández Manteca, Pedro José; García Alonso, Andrea; Gómez Gramuglio, Gervasio; Martínez Rivero, Celso; Martínez Ruiz del Árbol, Pablo; Matorras Weinig, Francisco; Piedra Gómez, Jonatan; Prieëls, Cedric; Rodrigo Anoro, Teresa; Ruiz Jimeno, Alberto; Russo, Lorenzo; Scodellaro, Luca; Vila Álvarez, Iván; Vizán García, Jesús Manuel

doi:10.1016/j.physletb.2020.135203

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Identificadores

URI: https://hdl.handle.net/10902/36098

DOI: 10.1016/j.physletb.2020.135203

ISSN: 0370-2693

ISSN: 1873-2445

; [et al.]

Fecha

2020-03

Derechos

Attribution 4.0 International

Publicado en

Physics Letters B 802 (2020) 135203

Editorial

Elsevier

Enlace a la publicación

https://doi.org/10.1016/j.physletb.2020.135203

Palabras clave

CMS

b physics

Heavy-flavor spectroscopy

Computing

Resumen/Abstract

The observation of the L0b --> J/psLf decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb-1. The ratio of the branching fractionsV(Lob --> J/psLf) /V(Lob --> ps (2S) L is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10-2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of f and ps(2S) decays to the reconstructed final states.

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