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Journal Article

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

MPS-Authors
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Schmelling,  M.       
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Zavertyaev,  M.       
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Citation

LHCb Collaboration, Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinén, F., Ackernley, T., et al. (2023). Direct CP violation in charmless three-body decays of B± mesons. Physical Review D, 108(1): 012008. doi:10.1103/PhysRevD.108.012008.


Cite as: https://hdl.handle.net/21.11116/0000-000D-D772-0
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.