Direct CP violation in charmless three-body decays of B± mesons

Brundu, D.;Dettori, F.;Garau, M.;Lai, A.;Lampis, A.;Manca, G.;Oldeman, R.;Saitta, B.;
2023-01-01

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
Inglese
108
1
012008
17
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.012008
Esperti anonimi
scientifica
Aaij, R.; Abdelmotteleb, A.  S.  W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1010
open
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