Measurement of Direct $C\!P$ Violation in $\Lambda_b^0 \to p h^-$ Decays at LHCb

In this proceeding the latest measurement of the direct $C\!P$ asymmetry in the $\Lambda_b^0 \to p K^-$ and $\Lambda_b^0 \to p \pi^-$ decays observed during Run 1 and Run 2 by the LHCb experiment is presented. The events were collected in proton-proton collisions with centre-of-mass energy of 7, 8 and 13\,TeV, corresponding to a total integrated luminosity of 9\,fb${}^{-1}$. The Run 1 measurement supersedes the previous LHCb results, while the combination of the two Runs provides the most accurate values of the quantities to date, namely: \begin{alignat*}{3} &A_{CP}^{pK^-}&=&(-1.1\pm 0.7 \pm 0.4)\%, \\ &A_{CP}^{p\pi^-}&=&(\phantom{-}0.2\pm 0.8 \pm 0.4)\%, \end{alignat*} compatible, within 1.5\,$\sigma$ at a precision of the order of 1\%, with the hypothesis of $C\!P$ conservation in the decays.