Realistic calculations of K-NN, K-NNN, and K-K-NN quasibound states

N. Barnea, A. Gal*, E. Z. Liverts

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

Binding energies and widths of three-body K-NN, and of four-body K-NNN and K-K-NN nuclear quasibound states are calculated in the hyperspherical basis, using realistic NN potentials and subthreshold energy dependent chiral K-N interactions. Results of previous K -pp calculations are reproduced and an upper bound is placed on the binding energy of a K -d quasibound state. A self-consistent handling of energy dependence is found to restrain binding, keeping the calculated four-body ground-state binding energies to relatively low values of about 30 MeV. The lightest strangeness -2 particle-stable K- nuclear cluster is most probably K-K-NN. The calculated K-N→πY conversion widths range from approximately 30 MeV for the K-NNN ground state to approximately 80 MeV for the K-K-NN ground state.

Original languageAmerican English
Pages (from-to)132-137
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume712
Issue number1-2
DOIs
StatePublished - 30 May 2012

Bibliographical note

Funding Information:
This work was supported in part (NB and EZL) by the Israel Science Foundation grant 954/09 , and in part (AG) by the EU initiative FP7, HadronPhysics2 , under Project No. 227431.

Keywords

  • Few-body systems
  • Forces in hadronic systems and effective interactions
  • Kaon-baryon interactions
  • Mesic nuclei

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