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

B. L. Ioffe; M. A. Shifman

doi:10.1016/0370-2693(80)90409-8

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

B. L. Ioffe
, M. A. Shifman

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

72 Scopus citations

Abstract

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, m_d/m_u. Under a standard choice of m_d/m_u theory and experiment are in good agreement with each other.

Original language	English (US)
Pages (from-to)	99-102
Number of pages	4
Journal	"Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics"
Volume	95
Issue number	1
DOIs	https://doi.org/10.1016/0370-2693(80)90409-8
State	Published - 1980

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abstract = "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.",

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AU - Shifman, M. A.

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AB - 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.

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

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