The strange meson resonances observed in the reaction K-p → anti K0π+π-n at 11 GeV/c

A model incorporating K* resonance contributions and simple backgrounds is shown to quantitatively reproduce the mass dependence of the partial wave amplitudes governing the production and decay of the anti K0π+π- system. A fit of this model to these amplitudes confirms the resonance interpretations of the well-established 1+ K1(1400), the 2+ K2*(1430), the 3- K3*(1780), and the less well-known 1- states, the K*(1410) and the K*(1790). The 4+ amplitudes are shown to be consistent with the production and decay of the 4+ K4*(2060). A second 2+ enhancement at a mass of ≅ 1.95 GeV/c2 can be interpreted as resonant and may be the radial excitation of the K2*(1430) or the triplet partner of the K4*(2060). New measurements of the masses, widths and branching ratios of these states are given, and the implications of these data for the spectroscopy of the non-strange meson sector are discussed. (orig.)