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- W2004607975 abstract "Abstract We present shell-model calculations of Λ-hypernuclear spectra from ( π + , K + ) reactions. Comparison is made with the recent data taken at Brookhaven. The reaction is described in a DWIA framework where the distortions are treated in a simplified eikonal approximation. The continuum part of the spectra is calculated with realistic Λ wave functions and added to the bound-state spectrum. Using potential parameters extracted from earlier ( K − , π − ) data on 12 C and 16 O our calculations agree reasonably well with the experiments without any additional parameter. For heavier hypernuclei, the agreement is less good, and a more quantitative treatment of distortion and nuclear structure effects is needed to account for absolute cross sections and their J dependence. Due to the more complicated neutron-hole structure in heavier Λ-hypernuclei, deeply bound S 1 2 states appear as separate peaks only for nuclei up to 28 Si. Possible improvements of our model are discussed qualitatively. We comment also on the question of partial quark deconfinement of the Λ-hyperon inside the hypernucleus." @default.
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- W2004607975 date "1989-01-01" @default.
- W2004607975 modified "2023-09-29" @default.
- W2004607975 title "Shell-model calculation of a-hypernuclear spectra from (π+, K+) reactions" @default.
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- W2004607975 doi "https://doi.org/10.1016/0375-9474(89)90520-4" @default.
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