# Scalar meson properties from D-meson decays

Abstract : Decay amplitudes of D(D_s)->f0(980)X, X=pi, K, are compared to experimental branching ratios with the aim of singling out the poorly known D->f0(980) transition form factor in these amplitudes. Since the other elements of the amplitudes are either calculable in an effective QCD theory using operator product expansion or are known from experiment (e.g. the pion and kaon decay constants), we can take advantage of these reactions to constrain the transition form factors obtained in relativistic quark models. In these models, the f0(980) wavefunction requires an unknown size parameter for both its non-strange ubar u(dbar d) and strange sbar s components, which we fit to the D(D_s) decay data.
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http://hal.in2p3.fr/in2p3-00126611
Contributor : Dominique Girod <>
Submitted on : Monday, February 5, 2007 - 10:34:03 AM
Last modification on : Thursday, December 10, 2020 - 12:32:17 PM

### Citation

B. El-Bennich, O. Leitner, B. Loiseau, J.-P. Dedonder. Scalar meson properties from D-meson decays. 18th International IUPAP Conference on Few-Body Problems in Physics (FB18), Aug 2006, Santos, Brazil. pp.510-513, ⟨10.1016/j.nuclphysa.2007.03.086⟩. ⟨in2p3-00126611⟩

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