Further investigation of the ${\gamma}$-transitions in $^{4}_{\Lambda}$H and $^{4}_{\Lambda}$He hypernuclei

The gamma -spectra induced by stopped K/sup -/ mesons in /sup 6/Li and /sup 7/Li targets were obtained in coincidence with the accompanying charged pions and pi /sup 0/ mesons. The gamma -line at (1.04+or-0.04) MeV observed with charged pions was identified as a gamma -transition in /sub Lambda //sup 4/H, whereas the gamma -line at (1.15+or-0.04) Me V observed with pi /sup 0/ mesons was ascribed to a gamma -transition in /sub Lambda //sup 4/He. Using these new values for the excitation energies of the 1/sup +/ levels of /sub Lambda //sup 4/H and /sub Lambda //sup 4/He hypernuclei, the phenomenological Lambda N potential for the s-state interaction was recalculated. (9 refs).