The branching fraction and direct CP asymmetry of the decay B+→J/ψρ+ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3fb-1. The following results are obtained: B(B+→J/ψρ+)=(3.81-0.24+0.25±0.35)×10-5,ACP(B+→J/ψρ+)=-0.045-0.057+0.056±0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.

Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., et al. (2019). Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(6) [10.1140/epjc/s10052-019-6698-3].

Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays

Belloli N.;Borsato M.;Calvi M.;Carniti P.;Fazzini D.;Gotti C.;Martinelli M.;Petruzzo M.;
2019

Abstract

The branching fraction and direct CP asymmetry of the decay B+→J/ψρ+ are measured using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3fb-1. The following results are obtained: B(B+→J/ψρ+)=(3.81-0.24+0.25±0.35)×10-5,ACP(B+→J/ψρ+)=-0.045-0.057+0.056±0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.
Articolo in rivista - Articolo scientifico
Branching fraction; CP asymmetry; B+
English
2019
79
6
537
open
Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., et al. (2019). Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(6) [10.1140/epjc/s10052-019-6698-3].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/242937
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