The K¯NN system revisited including absorption

We present the Fixed Center Approximation (FCA) to the Faddeev equations for the K¯NN system with S=0, including the charge exchange mechanisms in the K¯ rescattering. The system appears bound by about 35 MeV and the width, omitting two body absorption, is about 50 MeV. We also evaluate the K¯ absorption width in the bound K¯NN system by employing the FCA to account for K¯ rescattering on the NN cluster. The width of the states found previously for S=0 and S=1 is found now to increase by about 30 MeV due to the K¯NN absorption, to a total value of about 80 MeV.