Λ-Binding Energies in Heavy Hyperfragments (35≲A≲80)

Abstract

Analysis of 16 short-range (≤10μ) hyperfragments, produced from 1.5-GeV/c $K^{-}$ interactions in $L_4$ hypersensitized emulsions and decaying ${\pi }^{-}$ mesonically, is presented. Of these, 9 are classified as due to the residual spallation products of silver and bromine nuclei, 5 as beloning to lighter species ($A<~20$), and 2 as ambiguous. The masses of the 9 spallation hyperfragments are determined using the "spallation model." It is concluded that for hyperfragments of masses $A\simeq 35 \mathrm{to} 80$, the upper limits of $B_{\Lambda }$ could vary from 21.9 to 24.5 MeV.