Ambiguities in the calculation of leptonic decays of excited heavy quarkonium
classification
✦ hep-ph
keywords
leptonicambiguitiescalculationdecaydecaysdependentdeterminationexcitations
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We point out that the determination of the leptonic decay width of radially-excited quarkonia is strongly dependent on the position of the node typical of these excitations. We suggest that this feature could be related with the longstanding rho-pi puzzle.
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