Observation of a NarrowK(1760) in theKπSystem

We have observed $\gtrsim 4\sigma$ signals at mass 1760 MeV and width < 80 MeV in both the $K\pi$ mass and the ${Y_2}^0$-moment spectra from a sample of 5330 events of the type $K^{-}p\to K^{-}{\pi }^{+}n$ at 7.3 $\frac{\mathrm{GeV}}{c}$. Our evidence for a $K\pi \pi$ decay mode of this resonance is only of marginal statistical significance. We may be observing the same object as that reported previously by Carmony et al., although the detailed structure in our data is different.