The decays ψ';'→J/ψ+π0(η) and quark masses

B. L. Ioffe, M. A. Shifman

Research output: Contribution to journalArticlepeer-review

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We discuss the decays ψ';'→J/ψ+π0 and ψ';'→J/ψ+η. We obtain a reliable, model-independent theoretical prediction for the ratio of the decay rates based only on the QCD lagrangian and certain low-energy theorems. The theoretical formula, apart from kinematical factors, contains only the ratio of the current quark masses, md/mu. Under a standard choice of md/mu theory and experiment are in good agreement with each other.

Original languageEnglish (US)
Pages (from-to)99-102
Number of pages4
Journal"Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics"
Issue number1
StatePublished - Jan 1 1980

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