Measurements of CP asymmetries in charmless three-body decays of B± mesons are reported using proton-proton collision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.9 fb^−1. The previously observed CP asymmetry in B± → π± K+ K− decays is confirmed, and CP asymmetries are observed with a significance of more than five standard deviations in the B± → π± π+ π− and B± → K± K+ K− decays, while the CP asymmetry of B± → K± π+ π− decays is confirmed to be compatible with zero. The distributions of these asymmetries are also studied as a function of the three-body phase space and suggest contributions from rescattering and resonance interference processes. An indication of the presence of the decays B± → π± χc0(1P) in both B± → π± π+ π− and B± → π± K+ K− decays is observed, as is CP violation involving these amplitudes.

Aaij, R., Abdelmotteleb, A., Beteta, C.A., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Direct CP Violation in Charmless Three-Body Decays of B± Mesons. PHYSICAL REVIEW D, 108(1), 1-17 [10.1103/PhysRevD.108.012008].

Direct CP Violation in Charmless Three-Body Decays of B± Mesons

Carbone, A;Ferrari, F;Galli, D;Manuzzi, D;Patrignani, C;Villa, A;Zucchelli, S;
2023

Abstract

Measurements of CP asymmetries in charmless three-body decays of B± mesons are reported using proton-proton collision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.9 fb^−1. The previously observed CP asymmetry in B± → π± K+ K− decays is confirmed, and CP asymmetries are observed with a significance of more than five standard deviations in the B± → π± π+ π− and B± → K± K+ K− decays, while the CP asymmetry of B± → K± π+ π− decays is confirmed to be compatible with zero. The distributions of these asymmetries are also studied as a function of the three-body phase space and suggest contributions from rescattering and resonance interference processes. An indication of the presence of the decays B± → π± χc0(1P) in both B± → π± π+ π− and B± → π± K+ K− decays is observed, as is CP violation involving these amplitudes.
2023
Aaij, R., Abdelmotteleb, A., Beteta, C.A., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Direct CP Violation in Charmless Three-Body Decays of B± Mesons. PHYSICAL REVIEW D, 108(1), 1-17 [10.1103/PhysRevD.108.012008].
Aaij, R; Abdelmotteleb, ASW; Beteta, CA; Abudinén, F; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Agapopoulou, C; Aidala, CA; Aiola, S; Ajaltou...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/952191
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