The branching fraction and direct CP asymmetry of the decay B +. J/.. + are measured using protonproton collision data collected with the LHCb detector at centre- of- mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3 fb - 1. The following results are obtained: ( B +. J/.. +) = ( 3.81 + 0.25 - 0.24 +/- 0.35) x 10 - 5, ACP ( B +. J/.. +) = - 0.045 + 0.056 - 0.057 +/- 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

Graverini E;Punzi G;
2019-01-01

Abstract

The branching fraction and direct CP asymmetry of the decay B +. J/.. + are measured using protonproton collision data collected with the LHCb detector at centre- of- mass energies of 7 and 8 TeV, corresponding to a total integrated luminosity of 3 fb - 1. The following results are obtained: ( B +. J/.. +) = ( 3.81 + 0.25 - 0.24 +/- 0.35) x 10 - 5, ACP ( B +. J/.. +) = - 0.045 + 0.056 - 0.057 +/- 0.008, where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.
2019
Aaij, R; Beteta, Ca; Adeva, B; Adinolfi, M; Aidala, Ca; Ajaltouni, Z; Akar, S; Albicocco, P; Albrecht, J; Alessio, F; Alexander, M; Albero, Aa; Alkhaz...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/1210487
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