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.

Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays / Aaij, R., Beteta, C.A., Adeva, B., Adinolfi, M., Aidala, C.A., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Albero, A.A., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:6(2019). [10.1140/epjc/s10052-019-6698-3]

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

Capriotti L.;Casse G.;Sarti A.;Sciubba A.;
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.
2019
CP violation, Hadron-Hadron Scattering, Branching fraction, B physics, Flavor physics
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays / Aaij, R., Beteta, C.A., Adeva, B., Adinolfi, M., Aidala, C.A., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Albero, A.A., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:6(2019). [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/11573/1310083
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