Charmless b-hadron decays at LHCb
February 23, 2020
Violation of charge-parity ($C\!P$) symmetry in the Standard Model is driven by a single global phase, however manifestations of $C\!P$ violating quantities are often non-trivial due to the role of the strong interaction in generating observable $C\!P$ violation effects. Here we explore how the role of the strong phase in $B^+ \rightarrow \pi^+\pi^+\pi^-$ decays, described by the intermediate resonance structure and final-state rescattering effects, governs the manifestation of large $C\!P$ violation. Significant $C\!P$ violation is observed in the scalar and tensor contributions, along with the first observation of $C\!P$ violation in the interference between two competing decay amplitudes. Additionally $P$ and $C\!P$ violation are tested for in the phase-space of $\Lambda_b^0 \rightarrow p^+\pi^-\pi^+\pi^-$ decays using model-independent triple-product asymmetry and energy-test methods, with a first observation of $P$ violation in $b$-baryon decays.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.