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Measurement of the <math altimg="si1.svg"><msubsup><mrow><mtext>B</mtext></mrow><mrow><mtext>s</mtext></mrow><mrow><mn>0</mn></mrow></msubsup><mo stretchy="false">→</mo><msup><mrow><mi mathvariant="normal">μ</mi></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup><msup><mrow><mi mathvariant="normal">μ</mi></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">−</mo></mrow></msup></math> decay properties and search for the B0 → μ+μ− decay in proton-proton collisions at <math altimg="si2.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn><mspace width="0.2em"/><mtext>TeV</mtext></math>

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Benecke, Anna [UCL] Bruno, Giacomo [UCL] Bury, Florian [UCL] Caputo, Claudio [UCL] David, Pieter [UCL] Delaere, Christophe [UCL] Donertas, Izzeddin Suat [UCL] Giammanco, Andrea [UCL] Jaffel, Khawla [UCL] Jain, Sandhya [UCL] Lemaitre, Vincent [UCL] Mondal, Kuntal [UCL] Taliercio, Angela [UCL] Tran, Tu Thong [UCL] Vischia, Pietro [UCL] Wertz, Sébastien [UCL] CMS

Measurements are presented of the Bs0→μ+μ− branching fraction and effective lifetime, as well as results of a search for the B0→μ+μ− decay in proton-proton collisions at s=13TeV at the LHC. The analysis is based on data collected with the CMS detector in 2016–2018 corresponding to an integrated luminosity of 140fb−1. The branching fraction of the Bs0→μ+μ− decay and the effective Bs0 meson lifetime are the most precise single measurements to date. No evidence for the B0→μ+μ− decay has been found. All results are found to be consistent with the standard model predictions and previous measurements.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2023
Language Anglais
Journal information "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics" - Vol. 842, art. 137955 (2023)
Peer reviewed yes
issn 0370-2693
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Keywords CMS ; BPH ; Flavor physics ; Rare decays ; p p: scattering ; p p: colliding beams ; B/s0: leptonic decay ; B0: leptonic decay ; muon: pair production ; meson: lifetime ; B/s0: lifetime: measured ; B/s0: branching ratio: measured ; B0: branching ratio: upper limit ; CERN LHC Coll ; CMS ; experimental results ; B/s0 --> muon+ muon- ; B0 --> muon+ muon- ; 13000 GeV-cms
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Bibliographic reference Benecke, Anna ; Bruno, Giacomo ; Bury, Florian ; Caputo, Claudio ; David, Pieter ; et. al. Measurement of the Bs0→μ+μ− decay properties and search for the B0 → μ+μ− decay in proton-proton collisions at s=13TeV. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 842, art. 137955 (2023)
Permanent URL http://hdl.handle.net/2078.1/275163