PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Parallel: Quark and Lepton Flavour Physics
Measurements of CP violation in charmless 3-body B meson decays at LHCb
T. Grammatico* on behalf of the LHCb collaboration
*corresponding author
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Pre-published on: February 10, 2021
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Charmless 3-body B-meson decays can present significant $C\!P$ asymmetries. Large raw $C\!P$ asymmetries were observed in $B^+ \rightarrow \pi^+ K^+K^-$ and $B^+ \rightarrow \pi^+ \pi^+\pi^-$ decays by the LHCb collaboration. The most recent results from LHCb are discussed here. They include amplitude analyses of $B^+ \rightarrow \pi^+ K^+K^-$ and $B^+ \rightarrow \pi^+ \pi^+\pi^-$ decays. The study of $B^+ \rightarrow \pi^+ K^+K^-$ reported a large $C\!P$ asymmetry arising from the S-wave. In the case of the $B^+ \rightarrow \pi^+ \pi^+\pi^-$ decay analysis, the first observation of $C\!P$ violation in a process involving a tensor was made.
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