New data on K−p→ωΛK^{-}p \rightarrow \omega\Lambda and a partial wave analysis between the cm energies 1915 and 2168 Mev

Cross sections of the reaction K/sup -/p to pi /sup +/ pi /sup -/ pi /sup 0/ Lambda are determined in a bubble chamber study at 10 incoming beam momenta between 1.425 GeV/c and 1.800 GeV/c. For the subsample K /sup -/p to omega Lambda , cross sections and angular distributions are presented together with their legendre polynomial expansions and those of the single and joint density matrix elements. An energy dependent partial-wave analysis is performed including earlier data. The data is well fitted by constant background amplitudes in the outgoing S, P and D waves plus two I=0 resonances in this region, the well established G/sub 7/ Lambda (2100) and the P/sub 3/ Lambda (1870) . (14 refs)

A partial wave analysis of the (Kˉ0π+π−)(\bar{K}^{0}\pi^{+}\pi^{-}) system produced in K−p→Kˉ0π+π−nK^{-}p \rightarrow \bar{K}^{0}\pi^{+}\pi^{-}n at 10 GeV/c

A partial wave analysis of the non-diffractively produced (K/sup 0/ pi /sup +/ pi /sup -/) system has been performed. The system was produced in the reaction K/sup -/p to K/sup 0/ pi /sup +/ pi /sup -/n at 10 GeV /c, measured in the CERN Omega spectrometer. Besides the well-known K* (1420) resonance, the authors find good evidence for the production of Q/sub 2/(1400) and some indication for Q/sub 1/(1290) production in J /sup P/=1/sup +/. In addition a bump in the 1800 MeV region is clearly observed, the properties of which are discussed