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arxiv: hep-ph/9902349 · v1 · submitted 1999-02-15 · ✦ hep-ph

The omega to rho pi transition and omega to rho 3 pi decay

classification ✦ hep-ph
keywords omegasigmadecaycontactmodeltransitionalthoughaveraging
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We evaluate the omega to rho pi transition and the omega to 3 pi decay using a Quark Level Linear Sigma Model ($QL\sigma M$). We obtain $g^{QL\sigma M}_{\omega\rho\pi}= (10.33 - 14.75) GeV^{-1}$ to be compared with other model dependent estimates averaging to $g_{\omega\rho\pi} = 16 GeV^{-1}$. We show that in the $QL\sigma M$ a contact term is generated for the $\omega \to 3 \pi$ decay. Although the contact contribution by itself is small, the interference effects turn out to be important.

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