Scalar Dipion States Produced in Heavy Quarkonium Decays and the Final State Interaction

Details Scalar Dipion States Produced in Heavy Quarkonium Decays and the Final State Interaction Scalar Dipion States Produced in Heavy Quarkonium Decays and the Final State Interaction

2002-11-04

arxiv.org/abs/hep-ph/0211029v2

Prog.Theor.Phys.109:265-277,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

12pages with 5 eps figs

Scientific paper

10.1143/PTP.109.265

We study phenomenologically the invariant mass spectra of scalar dipion states produced in cascade decays of excited $\Upsilon$ and $\psi$, and $J/\psi$ decays into light vector meson. Dipion production amplitude is given as a product of 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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