J/Ψ→φππ(KK) decays, chiral dynamics and OZI violation Original Research Article

We have studied the invariant mass distributions of the ππ and View the MathML source systems for invariant masses up to 1.2 GeV from the View the MathML source decays. The approach exploits the connection between these processes and the ππ and View the MathML source strange and nonstrange scalar form factors by considering the φ meson as a spectator. The calculated scalar form factors are then matched with the ones from next-to-leading-order chiral perturbation theory, including the calculation of the the View the MathML source scalar form factors. Final state interactions in the View the MathML source processes are taken into account as rescattering effects in the system of the two pseudoscalar mesons. A very good agreement with the experimental data from DM2 and MARK-III is achieved. Furthermore, making use of SU(3) symmetry, the S-wave contribution to the π+π− event distribution in the J/Ψ→ωπ+π− reaction is also given and the data up to energies of about 0.7 GeV are reproduced. These decays of the J/Ψ to a vector and a pair of pseudoscalars turn out to be very sensitive to OZI-violating physics which we parameterize in terms of a direct OZI-violation parameter and the chiral perturbation theory low-energy constants L4r and L6r. These constants all come out very different from zero, lending further credit to the statement that the OZI rule is subjected to large corrections in the scalar 0++ channel.