Binding energy and π⁺ decay of light hyperfragments

Abstract

Binding energy values of hyperfragments from a sample of 541 uniquely identified mesic decays with mass numbers A=3 to 14 are presented. There does not seem to be any detectable difference in the binding energy value of Λ in AH⁴ obtained from its two-body and three-body decay modes. Within statistical error, the binding energy values of Λ in AH⁴ and AH⁴ are also the same. From a sample of 2π ⁺ decay events of hyperfragments the branching ratio of AH⁴ decaying by π ⁺ to π ^- mode is found to be (1·5±1·0)%.