The s-sbar and K-Kbar nature of f0(980) in Ds decays
Abstract
We examine the Ds -> f0(980) pi amplitude through a constituent quark-meson model, incorporating heavy quark and chiral symmetries, finding a good agreement with the recent E791 data analysis of Ds -> 3pi via f0(980). The f0(980) resonance is considered at the moment of production as an s sbar state, later evolving to a superposition of mainly s sbar and K Kbar. The analysis is also extended to the more frequent process Ds -> phi pi.
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