Possible observation of a γ-transition in the Λ8Li hypernucleus

Abstract The γ-rays produced by absorption of stopped K − mesons in a 9 Be target were measured in coincidence with the accompanying charged pions and π 0 mesons. The γ-line at (1.22 ± 0.04) MeV observed in coincidence with the (40–80) MeV charged pions was tentatively ascribed to a γ-transition in the Λ 8 Li hypernucleus. A possible interpretation of this line as a decay of the 1 − excited state to the 1 − ground state in Λ 8 Li is discussed.