Search of CP violation in baryons with the LHCb detector

Abstract

The latest results from the LHCb collaboration for the search for $CP$ violation in $b$-baryon decays are reported here. The first article presented is the search conducted in the $\Lambda_b^0 \rightarrow p \pi^- \pi^+ \pi^- $ decay, and the subsequent observation of $P$ violation. The following paper describes the search and the first observation of the $\Lambda_b^0 \rightarrow D^0 p K^-$ decay, with $D^0 \rightarrow K \pi$, Cabibbo-favoured and doubly suppressed mode. This proceeding concludes with the first amplitude analysis performed in $\Xi_b^- \rightarrow p K^- K^-$, whose model allows for \textit{CP} violation.