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 ${\Lambda }_b^0\to p{\pi }^{-}{\pi }^{+}{\pi }^{-}$ decay, and the subsequent observation of $P$ violation. The following paper describes the search and the first observation of the ${\Lambda }_b^0\to D^{0}p{K}^{-}$ decay, with $D^0\to K\pi$, Cabibbo-favoured and doubly suppressed mode. This proceeding concludes with the first amplitude analysis performed in ${\Xi }_b^{-}\to p{K}^{-}{K}^{-}$, whose model allows for \textit{CP} violation.

arXiv commentPresented at the 12th Workshop on the CKM Unitarity Triangle, 18-22 September 2023, Santiago de Compostela, 6 pages, 3 figures