Measurement ofDs±andD±Decays to Nonstrange States

Abstract

Using the data from Fermilab experiment 691, we have observed signals for the decays ${D_s}^{\pm }$ and $D^{\pm }\to {\pi }^{-}{\pi }^{+}{\pi }^{\pm }$ and have analyzed these modes for the fraction due to ${\rho }^0{\pi }^{\pm }$ and $f_0\mathrm{}\left(975\right)\mathrm{}{\pi }^{\pm }$. In addition, we have searched for the decays ${D_s}^{\pm }$ and $D^{\pm }\to {\pi }^{-}{\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{\pm }$. Values or upper limits are reported for the relative branching fractions for all of the above decays.