1AAIJ 2023X studies the ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit K}^{-}}$ system within ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\overline{\mathit \Lambda}}_{{{c}}}^{-}}{{\mathit K}^{-}}$ decays.
2AAIJ 2020X uses a prompt ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit K}^{-}}$ sample and reports $2938.55$ $\pm0.21$ $\pm0.17$ $\pm0.14$ MeV where the last uncertainty is due to the ${{\mathit \Lambda}_{{{c}}}^{+}}$ mass. Observes that the broader resonance at 2930 MeV seen in ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \Lambda}_{{{c}}}^{+}}{{\overline{\mathit \Lambda}}_{{{c}}}^{-}}$ by LI 2018A and AUBERT 2008H resolves into two narrower peaks at approximately 2939 MeV and 2923 MeV.
References:
AAIJ
2023X
PR D108 012020
Study of the $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ decay
AAIJ
2020X
PRL 124 222001
Observation of New $\Xi_c^0$ Baryons Decaying to $\Lambda_c^+ K^-$
LI
2018A
EPJ C78 252
Observation of $\Xi_{c}(2930)^0$ and updated measurement of $B^{-} \to K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ at Belle
AUBERT
2008H
PR D77 031101
Study of ${{\overline{\mathit B}}}$ $\rightarrow$ ${{\mathit \Xi}_{{{c}}}}{{\overline{\mathit \Lambda}}_{{{c}}}^{-}}$ and ${{\overline{\mathit B}}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\overline{\mathit \Lambda}}_{{{c}}}^{-}}{{\overline{\mathit K}}}$ Decays at BABAR
