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arXiv · hep-ph/0411291

Leptonic widths of high excitations in heavy quarkonia

A. M. Badalian·A. I. Veselov·B. L. G. Bakker
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Abstract

Agreement with the measured electronic widths of the $ψ(4040)$, $ψ(4415)$, and $Υ(11019)$ resonances is shown to be reached if two effects are taken into account: a flattening of the confining potential at large distances and a total screening of the gluon-exchange interaction at $r\ga 1.2$ fm. The leptonic widths of the unobserved $Υ(7S)$ and $ψ(5S)$ resonances: $Γ_{e^+e^-}(Υ(7S))=0.11$ keV and $Γ(ψ(5S))\approx 0.54$ keV are predicted.

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A. M. Badalian, A. I. Veselov, B. L. G. Bakker. 2004-11-22. Leptonic widths of high excitations in heavy quarkonia. https://doi.org/10.1088/0954-3899%2F31%2F5%2F012

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