Measurement of the ratio of branching fractions B(B+ c → B0 sπ +)/B(B+ c → J/ψπ+)

Aaij, R.Alfonso Albero, AlejandroGarcia Moreno, PaulaGarrido Beltrán, LluísGironella Gironell, PereGomez Fernandez, S.Graugés Pous, EugeniLobo Salvia, AniolLópez Huertas, AlbertManera Escalero, RafelMarin Benito, CarlaMauricio, J.Vazquez Gomez, R.LHCb collaboration2025-04-252025-04-2520231126-6708https://hdl.handle.net/2445/220613The ratio of branching fractions of B+ c → B0 sπ + and B+ c → J/ψπ+ decays is measured with proton-proton collision data of a centre-of-mass energy of 13 TeV. The data were collected with the LHCb experiment during 2016–2018, corresponding to an integrated luminosity of 5.4 fb−1 . The B0 s mesons are reconstructed via the decays B0 s → J/ψφ and B0 s → D− s π +. The ratio of branching fractions is measured to be B(B+ c → B0 sπ +)/B(B+ c → J/ψπ+) = 91±10±8±3 where the first uncertainty is statistical, the second is systematic and the third is due to the knowledge of the branching fractions of the intermediate state decays. 1 p.application/pdfengcc-by (c) Aaij, R. et al., 2023http://creativecommons.org/licenses/by/4.0/HadronsFísica de partículesHadronsParticle physicsMeasurement of the ratio of branching fractions B(B+ c → B0 sπ +)/B(B+ c → J/ψπ+) info:eu-repo/semantics/article7577312025-04-25info:eu-repo/semantics/openAccess