Analysis of (π K+) and (K-, K+) hypernuclear production spectra in distorted-wave impulse approximation
Department of Physics, Faculty of Science, Hokkaido University, 060-0810, Sapporo, Japan
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Accepted: 7 July 2007
Published online: 7 September 2007
We study the hyperon-nucleus potential with distorted-wave impulse wave approximation (DWIA) using the Green's function method. In order to include the nucleon and hyperon potential effects in Fermi averaging, we introduce the local optimal momentum approximation of target nucleons. We can describe the quasi-free Λ , Σ and Ξ production spectra in a better way than in the standard Fermi-averaged t -matrix treatments.
PACS: 21.80.+a Hypernuclei – / 24.50.+g Direct reactions –
© Società Italiana di Fisica and Springer-Verlag, 2007