Faddeev calculation of a K-pp quasibound state

We report on the first genuinely three-body K̄NN-πΣN coupled-channel Faddeev calculation in search for quasibound states in the K-pp system. The main absorptivity in the K-p subsystem is accounted for by fitting to K-p data near threshold. Our calculation yields one such quasibound state, with I=1/2, Jπ=0-, bound in the range B∼55-70MeV, with a width of Γ∼90-110MeV. These results differ substantially from previous estimates, and are at odds with the K-pp→Λp signal observed by the FINUDA collaboration.