Towards a dynamical understanding of the non-$D \bar D$ decay of $ψ(3770)$

Details Towards a dynamical understanding of the non-$D \bar D$ decay of $ψ(3770)$ Towards a dynamical understanding of the non-$D \bar D$ decay of $ψ(3770)$

2009-02-08

arxiv.org/abs/0902.1300v3

Phys.Rev.Lett.102:172001,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures, proofread version to appear on Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.102.172001

We investigate the $\psi(3770)$ non-$D\bar{D}$ decays into $VP$, where $V$ and $P$ denote vector and pseudoscalar mesons, respectively, via OZI-rule-evading intermediate meson rescatterings in an effective Lagrangian theory. By identifying the leading meson loop transitions and constraining the model parameters with the available experimental data for $\psi(3770)\to J/\psi\eta$, $\phi\eta$ and $\rho\pi$, we succeed in making a quantitative prediction for all $\psi(3770)\to VP$ with $BR_{VP}$ from 0.41% to 0.64%. It indicates that the OZI-rule-evading long-range interactions are still playing a role in $\psi(3770)$ strong decays, and could be a key towards a full understanding of the mysterious $\psi(3770)$ non-$D\bar{D}$ decay mechanism.

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