Scalar Dipion States Produced in Heavy Quarkonium Decays and the Final State Interaction
نویسنده
چکیده
We study phenomenologically the invariant mass spectra of scalar dipion states produced in cascade decays of excited Υ and ψ, and J/ψ decays into light vector mesons. The dipion production amplitude is given as a product in the Born term and an effective scalar form factor written in terms of a unitarized chiral theory. The model reproduces the experimental mass spectra very well. @ @ @ @ @ @@ @ @
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