Baryonic decay and 1p-shell hypernuclear spectroscopy

The detailed discussion of baryonic decay channels is presented. Levels built on sp^–1, PP^–1 and ss^–1 configurations are considered. The results presented are obtained in the calculations based on the Translationally Invariant Shell Model which automatically includes some intruder states through the kinematic correlations. The role of the intruder states in the proton decay is discussed. The evolution of the baryonic decay width with increasing nucleon number A in the 1p-shell hypernuclei is traced. Hypernuclear decays into the bound excited states either of secondary hypernuclei or nuclei are revealed. Information which could be extracted from the de-excitation of the baryonic decay products whenever they were measured is discussed. From the suggested new set of theN interaction parameters for the sp^–1 configuration some new information on the proton decay of the ¹² C hypernucleus pp^–1 low-lying levels is given.We would like to express our sincere thanks to R. Chrien, D. Davis, H. Ejiri, K. Itonaga, J. Milener, T. Motoba, O. Richter, M. Sotona and Yu. Smirnov for many illuminating discussions. One author (L.M.) is indebted to Prof. T. Motoba for warm hospitality in Kyoto and Osaka, where a part of this report was prepared.