A measurement of CP-violating observables in B± → D* K± and B± → D* π± decays is made where the photon or neutral pion from the D* → D γ or D* → D π0 decay is not reconstructed. The D meson is reconstructed in the self-conjugate decay modes, D → K0S π+ π− or D → K0S K+ K−. The distribution of signal yields in the D decay phase space is analysed in a model-independent way. The measurement uses a data sample collected in proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of approximately 9 fb^−1. The B± → D* K± and B± → D* π± CP-violating observables are interpreted in terms of hadronic parameters and the CKM angle γ, resulting in a measurement of γ = (92{−17}{+21})º. The total uncertainty includes the statistical and systematic uncertainties, and the uncertainty due to external strong-phase inputs.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2024). A model-independent measurement of the CKM angle γ in partially reconstructed B± → D* h± decays with D → K0S h+ h− (h = π,K). JOURNAL OF HIGH ENERGY PHYSICS, 2024(2), 0-29 [10.1007/jhep02(2024)118].

A model-independent measurement of the CKM angle γ in partially reconstructed B± → D* h± decays with D → K0S h+ h− (h = π,K)

Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Spedicato, E.;Villa, A.;
2024

Abstract

A measurement of CP-violating observables in B± → D* K± and B± → D* π± decays is made where the photon or neutral pion from the D* → D γ or D* → D π0 decay is not reconstructed. The D meson is reconstructed in the self-conjugate decay modes, D → K0S π+ π− or D → K0S K+ K−. The distribution of signal yields in the D decay phase space is analysed in a model-independent way. The measurement uses a data sample collected in proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of approximately 9 fb^−1. The B± → D* K± and B± → D* π± CP-violating observables are interpreted in terms of hadronic parameters and the CKM angle γ, resulting in a measurement of γ = (92{−17}{+21})º. The total uncertainty includes the statistical and systematic uncertainties, and the uncertainty due to external strong-phase inputs.
2024
Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2024). A model-independent measurement of the CKM angle γ in partially reconstructed B± → D* h± decays with D → K0S h+ h− (h = π,K). JOURNAL OF HIGH ENERGY PHYSICS, 2024(2), 0-29 [10.1007/jhep02(2024)118].
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapopoulou, C.; Aidala, C....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1004976
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