p-Shell Hypernuclei via (K-, π-), (π+, K+) and (Stopped K-, π-) Reactions

Publisher Website
Google Scholar
Abstract
Systematic analyses of the strangeness-changing reactions on p-shell targets (9Be, 10,11B, 12,13C and 14,15N) have been performed in DWIA and with the configuration-mixed shell-model wavefunctions. The recoil effects for the outgoing meson and nucleon and Λ in the nucleus are correctly taken into account. The quasi-free continuum part of the excitation function is approximated by smearing the calculated strengths leading to the shell-model states with Λ in the (1s, 0d)Λ and (1p, 0f)Λ orbits. For each target, the calculated excitation functions for the three reactions are compared, showing the useful and complementary roles in hypernuclear spectroscopy. By comparing the (K-, π-) peaks and (π+, K+) peaks in the same energy region, for example, for 12ΛC, 13ΛC and 14ΛN, respectively, typical energy shifts are predicted because of the change of attributable J-structures. The angular distributions of the differental cross sections are also presented for the prominent peaks with the discussion of the absolute values and the recoil effects. The (stopped K-, π-) reaction results also in well-separated peaks in the bound-state region in 10ΛB, 12ΛC and 13ΛC. The present calculations not only give reasonable explanations on the existing experimental data but also present the detailed theoretical predictions on the p-shell hypernuclear structures with A≥10.

This publication has 0 references indexed in Scilit: