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

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 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.<els-accordion-group multiple="true" class="accordion-group hydrated" style="box-sizing: border-box; visibility: inherit; margin: 0px; padding: 0px; color: rgb(50, 50, 50); font-family: NexusSan, Arial, Georgia, sans-serif, serif; font-size: 16px;"><els-accordion-item id="topics-of-prominence" control-label="SciVal Topics" class="sc-els-accordion-item-h sc-els-accordion-item-s accordion hydrated" style="box-sizing: border-box; visibility: inherit; display: block; border-top: 0.0625rem solid rgb(46, 46, 46); margin: 0px; padding: 0px;"></els-accordion-item></els-accordion-group>