(π^+, K^+) Reaction Spectroscopy of Heavy Hypernuclei(Chapter III.,Hypernuclei and Baryon-Baryon Interaction)

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For the last few decades the (π^+, K^+) reaction has played an important role in heavy hypernuclear spectroscopy where the Λ spin-orbit splitting should be one of the most interesting subjects. In this article, first, various stages of calculational frameworks for hypernuclear production cross sections are discussed. Then, focusing on the ^<89>Y(π^+, K^+)^<89>_ΛY experimental data, new DWIA analysis has been carried out by taking full account of the core nuclear excitation effects. As a result we found that one of the doublet peaks comes from the nuclear core excitation and that the Λ spin-orbit splitting is small in consistent with the finding in the p-shell hypernuclei.
2010-11-30