The first study of CP violation in the decay mode B±→[K+K-π+π-]Dh± , with h= K, π , is presented, exploiting a data sample of proton–proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of 9 \,fb - 1 . The analysis is performed in bins of phase space, which are optimised for sensitivity to local CP asymmetries. CP -violating observables that are sensitive to the angle γ of the Unitarity Triangle are determined. The analysis requires external information on charm-decay parameters, which are currently taken from an amplitude analysis of LHCb data, but can be updated in the future when direct measurements become available. Measurements are also performed of phase-space integrated observables for B±→[K+K-π+π-]Dh± and B±→[π+π-π+π-]Dh± decays.

Aaij, R., Abdelmotteleb, A., Beteta, C., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). A study of CP violation in the decays B±→[K^+K^-π^+π^-]Dh± (h= K, π) and B±→[π^+π^-π^+π^-]Dh±. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(6) [10.1140/epjc/s10052-023-11560-5].

A study of CP violation in the decays B±→[K^+K^-π^+π^-]Dh± (h= K, π) and B±→[π^+π^-π^+π^-]Dh±

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Pardinas J. G.;Gotti C.;Kirsebom V. S.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Salomoni M.;Shields E. B.;
2023

Abstract

The first study of CP violation in the decay mode B±→[K+K-π+π-]Dh± , with h= K, π , is presented, exploiting a data sample of proton–proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of 9 \,fb - 1 . The analysis is performed in bins of phase space, which are optimised for sensitivity to local CP asymmetries. CP -violating observables that are sensitive to the angle γ of the Unitarity Triangle are determined. The analysis requires external information on charm-decay parameters, which are currently taken from an amplitude analysis of LHCb data, but can be updated in the future when direct measurements become available. Measurements are also performed of phase-space integrated observables for B±→[K+K-π+π-]Dh± and B±→[π+π-π+π-]Dh± decays.
Articolo in rivista - Articolo scientifico
CP Violation; B Physics; Proton-Proton Collisions; LHCb
English
29-giu-2023
2023
83
6
547
none
Aaij, R., Abdelmotteleb, A., Beteta, C., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). A study of CP violation in the decays B±→[K^+K^-π^+π^-]Dh± (h= K, π) and B±→[π^+π^-π^+π^-]Dh±. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(6) [10.1140/epjc/s10052-023-11560-5].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/455419
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