☆ 4.2 Article

K- pp system with chiral SU(3) effective interaction

NUCLEAR PHYSICS A (2008)

Journal

NUCLEAR PHYSICS A

Volume 804, Issue -, Pages 197-206

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ELSEVIER

DOI: 10.1016/j.nuclphysa.2008.02.001

Keywords

K-nuclear system; variational calculation; chiral SU(3) coupled-channel dynamics

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Physics, Nuclear

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Abstract

The K- pp system is investigated using a variational approach with realistic two-body interactions: the Argonne v18 NN potential and an energy dependent (K) over barN effective interaction derived from chiral SU(3) coupled-channel dynamics. Uncertainties in subthreshold extrapolations of the (K) over barN interaction are considered. A weakly bound K- pp state is found, with a binding energy B = (19 +/- 3) MeV substantially smaller than suggested in previous calculations. The decay width Gamma(K(-)pp -> pi Sigma N) is estimated to range between about 40 and 70 MeV. (c) 2008 Elsevier B.V. All rights reserved.

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