The ratio of branching fractions of B-c(+) -> B-s(0)pi(+) and B-c(+) -> J/psi pi(+) decays is measured with proton-proton collision data of a centre-of-mass energy of 13TeV. The data were collected with the LHCb experiment during 2016-2018, corresponding to an integrated luminosity of 5.4 fb(-1). The B-s(0) mesons are reconstructed via the decays B-s(0) -> J/psi phi and B-s(0) -> D-s(-)pi(+). The ratio of branching fractions is measured to be B(B-c(+) -> B-s(0)pi(+))/B(B-c(+) -> J/psi pi(+)) = 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.

Aaij, R., Abdelmotteleb, A., Beteta, C.a., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). Measurement of the ratio of branching fractions B(B+c → B0sπ+)/B(B< SUP>+c → J/ψπ+). JOURNAL OF HIGH ENERGY PHYSICS, 2023(7) [10.1007/JHEP07(2023)066].

Measurement of the ratio of branching fractions B(B+c → B0sπ+)/B(B< SUP>+c → J/ψπ+)

Archilli, F.;Santovetti, E.;
2023-07-07

Abstract

The ratio of branching fractions of B-c(+) -> B-s(0)pi(+) and B-c(+) -> J/psi pi(+) decays is measured with proton-proton collision data of a centre-of-mass energy of 13TeV. The data were collected with the LHCb experiment during 2016-2018, corresponding to an integrated luminosity of 5.4 fb(-1). The B-s(0) mesons are reconstructed via the decays B-s(0) -> J/psi phi and B-s(0) -> D-s(-)pi(+). The ratio of branching fractions is measured to be B(B-c(+) -> B-s(0)pi(+))/B(B-c(+) -> J/psi pi(+)) = 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.
7-lug-2023
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01
English
Con Impact Factor ISI
B Physics
Branching fraction
Flavour Physics
Hadron-Hadron Scattering
B-C-MESON
LIFETIME
DECAYS
Aaij, R., Abdelmotteleb, A., Beteta, C.a., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). Measurement of the ratio of branching fractions B(B+c → B0sπ+)/B(B< SUP>+c → J/ψπ+). JOURNAL OF HIGH ENERGY PHYSICS, 2023(7) [10.1007/JHEP07(2023)066].
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