A study of Ds± and D± decays into four-body final states, including ηπ± and ωπ±☆

Abstract We report results on D s ± decays into the final states π + π − π ± π 0 and K + K − π ± π 0 from the Fermilab charm photoproduction experiment E691. For the former decay we search for ηπ ± and ωπ ± components, and for the latter, we measure the relative rate for decays into φπ ± π 0 and non-resonant K ± K − π ± π 0 . We also present limits for Cabibbo-suppressed D ± decays into these final states, and measure the Cabibbo-allowed decay D ± → K ∓ π ± π + π 0 .