Realistic calculations of $\bar{K} N N$, $\bar{K} N N N$, and $\bar{K} \bar{K} N N$ quasibound states - INSPIRE

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Realistic calculations of $\bar{K} N N$ , $\bar{K} N N N$ , and $\bar{K} \bar{K} N N$ quasibound states

Mar, 2012

14 pages

Published in:

Phys.Lett.B 712 (2012) 132-137

Published: May 30, 2012

e-Print:

1203.5234 [nucl-th]

DOI:

10.1016/j.physletb.2012.04.055

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Abstract: (Elsevier)

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.

Note:

v3 matching journal publication

21.30.Fe
21.85.+d
13.75.Jz
21.45.-v
Few-body systems
Mesic nuclei
Forces in hadronic systems and effective interactions
Kaon-baryon interactions
Kaon–baryon interactions
ground state: binding energy

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