Shell-model predictions for ΛΛ hypernuclei
نویسندگان
چکیده
منابع مشابه
ΛΛ interaction and hypernuclei
Whether the existence of hyperonic matter is present in the central regions of neutron stars with densities are in excess of nuclear saturation density is unknown. One of the fundamental pieces to determine this is the interaction among baryons bearing strangeness. A neutron star has been considered as a gigantic nucleus of N ∼ 10 nucleons [1] with a radial structure closely related to the equa...
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New Faddeev-Yakubovsky calculations are reported for 6 ΛΛ He and 10 ΛΛ Be in terms of clusters of α's and Λ's, using ΛΛ s-wave potentials motivated by several of the Nijmegen model interactions. The self consistency of the ΛΛ hypernuclear world data for these species is discussed. The newly reported 6 ΛΛ He event is found to be compatible with ΛΛ interaction strengths provided by the Nijmegen s...
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Recent experiments on production of ΛΛ Hypernuclei have stimulated renewed interest in extracting the ΛΛ interaction from the few events identified since the inception of this field forty years ago. Few-body calculations relating to this issue are reviewed, particularly with respect to the possibility that A = 4 marks the onset of ΛΛ binding to nuclei. The Nijmegen soft-core model potentials NS...
متن کاملShell-Model Description of Λ Hypernuclei
Empirical data on the spectra of light hypernuclei, especially the data from recent γ-ray experiments, is used to constrain the parameters which govern the p N s Λ and p N p Λ two-body matrix elements that enter into shell-model calculations.
متن کاملPionic decay of L hypernuclei in a continuum shell model
The pionic decay of L hypernuclei has received attention in the past both from the experimental @1–7# and theoretical @8–22# points of view ~for a recent review see Ref. @23#!. It is well known that the mesonic decay is largely suppressed by Pauli blocking, although the consideration of proper pion distorted waves @13,16,20# weakens the effect of the Pauli blocking considerably. On the other ha...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2011
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2011.05.069