Study of Ds Decays

In the spectator model, the lowest lying bound state of the charm-strange quarks, the Ds meson, is predicted to decay via W emission from the charm quark and form states with s{bar s} hidden strangeness. The conventional hadronic modes will contain K{bar K}, {phi} and the f{sub 0}(975), which is considered to be the J{sup pc} = 0{sup ++} isoscalar s{bar s} meson. Hadronic decays of the Ds meson have been measured in relatively few modes and all modes are measured relative to the {phi}{pi} mode. In this paper, an upper limit for the absolute branching ratio of the Ds decay into the {phi}{pi} mode and evidence for the decay, Ds {yields} f{sub 0}(975){pi} is presented from the Mark III. 26 refs., 4 figs.