Reaction $K^{-}p\to {\pi }^0{\pi }^0{\Sigma }^0$ was measured with the Crystal Ball multiphoton spectrometer at eight $K^{-}$ momenta from 514 to $750\mathrm{MeV}∕c$. Dynamics and the energy dependence of the reaction are shown by Dalitz plots, invariant mass spectra, production angular distributions, and total cross sections. The dipion invariant-mass spectra for $K^{-}p\to {\pi }^0{\pi }^0{\Sigma }^0$ show an enhancement in the low mass region; the opposite is the case for the $K^{-}p\to {\pi }^0{\pi }^0\Lambda$ and ${\pi }^{-}p\to {\pi }^0{\pi }^{0}n$ reactions. There is no direct evidence for a $f_0\left(600\right)$-meson contribution to ${\pi }^0{\pi }^0$ production. Everywhere ${\sigma }_t(K^{-}p\to {\pi }^0{\pi }^0{\Sigma }^0)⪡{\sigma }_t(K^{-}p\to {\pi }^0{\pi }^0\Lambda )$.

• Received 2 April 2004

DOI:https://doi.org/10.1103/PhysRevC.70.034605