J/Ψ\to φππ(K \bar{K}) decays, chiral dynamcis and OZI violation

Details J/Ψ\to φππ(K \bar{K}) decays, chiral dynamcis and OZI violation J/Ψ\to φππ(K \bar{K}) decays, chiral dynamcis and OZI violation

2000-05-25

arxiv.org/abs/hep-ph/0005253v2

Nucl.Phys.A679:671-697,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

revtex, 21 pages, 10 figures, extended discussion of the model in section 2 and some minor corrections, version accepted for p

Scientific paper

10.1016/S0375-9474(00)00367-5

We have studied the invariant mass distributions of the \pi\pi and K \bar{K} systems for invariant masses up to 1.2 GeV from the J/\Psi \to \phi \pi\pi(K\bar{K}) decays. The approach exploits the connection between these processes and the \pi\pi and K\bar{K} strange and non-strange scalar form factors by considering the \phi 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 K\bar{K} scalar form factors. Final state interactions in the J/\Psi \to \phi \pi\pi (K\bar{K}) 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 \pi^+\pi^- event distribution in the J/\Psi \to \omega \pi^+\pi^- reaction is also given and the data up to energies of about 0.7 GeV are reproduced. These decays of the J/\Psi to a vector and a pair of pseudoscalars turn out to be very sensitive to OZI violating physics which we parametrize in terms of a direct OZI violation parameter and the chiral perturbation theory low energy constants L_4^r and L_6^r. These constants all come out very different from zero, lending further credit to the statement that the OZI rule is not operative in the scalar 0^{++} channel.

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