Measurement of the D+ and Ds+ decays into K+K-K+

Abstract

We present the first clear observation of the doubly Cabibbo suppressed decay D+ --> K-K+K+ and the first observation of the singly Cabibbo suppressed decay Ds+ --> K-K+K+. These signals have been obtained by analyzing the high statistics sample of photoproduced charm particles of the FOCUS(E831) experiment at Fermilab. We measure the following relative branching ratios: Gamma(D+ --> K-K+K+)/Gamma(D+ --> K-pi+pi+) = (9.49 +/- 2.17(statistical) +/- 0.22(systematic))x10^-4 and Gamma(Ds+ --> K-K+K+)/Gamma(Ds+ --> K-K+pi+) = (8.95 +/- 2.12(statistical) +2.24(syst.) -2.31(syst.))x10^-3.

10 pages, 8 figures

Cited by in corpus (8)

• Hadronic D Decays Involving Scalar Mesons
• The Scalar Meson f0(980) in Heavy-Meson Decays
• Hadronic D and D_s Meson Decays
• Comments on the Quark Content of the Scalar Meson $f_0(1370)$
• D^+_s -> pi^+ pi^+ pi^- decay: the 1^3P_0 s anti-s component in scalar-isoscalar mesons
• Scalar meson properties from D-meson decays
• Study of Cabibbo Suppressed Decays of the Ds Charmed-Strange Meson involving a KS
• Are there significant scalar resonances in $B^{-}\to D^{(\ast )0}{K}^{-}{K}^0$ decays?