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arXiv · hep-ph/9407373

Masses of $nS$-wave Heavy Quarkonium Levels from QCD Sum Rules

V. V. Kiselev
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Abstract

Using a specific scheme of the QCD sum rules, one derives an universal formula for the mass differences for the $nS$-levels of heavy qiarkonium. This relation does not depend on the flavours of the heavy quarks, composing the quarkonium, and it is in a good agreement with the experimental mass values for the $ψ$- and $Υ$-families.

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V. V. Kiselev. 1994-07-26. Masses of $nS$-wave Heavy Quarkonium Levels from QCD Sum Rules. https://arxiv.org/abs/hep-ph/9407373

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