The ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ are measured using a data sample of pp collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1 at centre-of-mass energies of 7 and 8 TeV. The results are (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of AC P(B+→ J/ ψK+) provides the most precise estimate to date of CP violation in the decay B+ → J/ψπ+, (Formula presented.).

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK +. JOURNAL OF HIGH ENERGY PHYSICS, 2017(3) [10.1007/JHEP03(2017)036].

Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK +

BELLOLI, NICOLETTA;BORGHERESI, ALESSIO;Borsato, M;CALVI, MARTA;CARNITI, PAOLO;CASSINA, LORENZO;FAZZINI, DAVIDE;GOTTI, CLAUDIO;GRILLO, LUCIA;Martinelli, M;Petruzzo, M;
2017

Abstract

The ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ are measured using a data sample of pp collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1 at centre-of-mass energies of 7 and 8 TeV. The results are (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of AC P(B+→ J/ ψK+) provides the most precise estimate to date of CP violation in the decay B+ → J/ψπ+, (Formula presented.).
Articolo in rivista - Articolo scientifico
B physics; Branching fraction; CP violation; Hadron-Hadron scattering (experiments);
LHCb
English
2017
2017
3
36
none
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK +. JOURNAL OF HIGH ENERGY PHYSICS, 2017(3) [10.1007/JHEP03(2017)036].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/148267
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