Observation of the Rare Baryonic Decay ${B}^{+}→p\overline{\mathrm{Λ}}$ and Measurement of its Weak Decay Parameter

Author(s): R. Aaij et al. (LHCb Collaboration) The first observation of the decay ${B}^{+}→p\overline{\mathrm{Λ}}$ is presented using proton-proton collision data collected by the LHCb experiment between 2016 and 2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $5.4\text{ }\text{ }{\mathrm{fb}}^{−1}$. The s… [Phys. Rev. Lett. 136, 051802] Published Fri Feb 06, 2026