Observation of several sources of $CP$ violation in $B^{+}\to K^{+}{\pi }^{+}{\pi }^{-}$ decays

LHCb collaboration, R. Aaij, M. Abdelfatah +1116

An amplitude analysis of $B^{+}\to K^{+}{\pi }^{+}{\pi }^{-}$ decays is presented in which six $CP$-violating phenomena are judged to be of significance for the first time. This analysis is b…