Title: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> system with chiral SU(3) effective interaction
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¯N effective interaction derived from chiral SU(3) coupled-channel dynamics. Uncertainties in subthreshold extrapolations of the K¯N 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 Γ(K−pp→πΣN) is estimated to range between about 40 and 70 MeV.