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Measurement of the ratio of branching fractions B ( B + c → B 0 s π + ) / B ( B + c →†’ J /ψπ + )

Aaij, R. ; Adlarson, Patrik ; Eklund, Lars ; Kupsc, Andrzej ; Zunica, G.

The journal of high energy physics, 2023-07 (7) [Periódico revisado por pares]

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Título:
Measurement of the ratio of branching fractions B ( B + c → B 0 s π + ) / B ( B + c → J /ψπ + )
Autor: Aaij, R. ; Adlarson, Patrik ; Eklund, Lars ; Kupsc, Andrzej ; Zunica, G.
Assuntos: B Physics ; Branching fraction ; Flavour Physics ; Hadron-Hadron Scattering
É parte de: The journal of high energy physics, 2023-07 (7)
Descrição: The ratio of branching fractions of B + c → B 0 s π + and B + c → J /ψπ + 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 0 s mesons are reconstructed via the decays B 0 s → J /ψφ and B 0 s → D ‾ s π + . The ratio of branching fractions is measured to be B ( B + c → B 0 s π + ) / 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.
Idioma: Inglês

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