What makes the peak structure of the $\Lambda p$ invariant-mass spectrum in the $K^{-}{}^3\mathrm{He}\to \Lambda pn$ reaction?

Takayasu Sekihara, Eulogio Oset, Angels Ramos

Recently a peak structure was observed near the $K^{-}pp$ threshold in the in-flight ${}^3\mathrm{He}(K^{-},\Lambda p)n$ reaction of the E15 experiment at J-PARC, which could be…