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Measuring psi(3770) --> rho pi in e+e- experiment

In S- and D-wave mixing scheme, the branching ratio of psi(3770) --> rho pi is estimated. Together with the continuum cross section of rho pi estimated by form factor, the observed cross section of rho pi production at psi(3770) in e+e- experiment is calculated taking into account the interference effect between the resonance and continuum amplitudes and the initial state radiative correction. The behavior of the cross section reveals that the disappearance of rho pi signal just indicates the existence of the corresponding branching ratio B(psi(3770) --> rho pi) at the order of 10 to the minus fourth.

preprint2003arXivOpen access
P. WangC. Z. YuanX. H. Mo
hep-ph
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Open access3 authors1 topic
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P. WangC. Z. YuanX. H. Mo

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