TY - JOUR
T1 - The decays ψ';'→J/ψ+π0(η) and quark masses
AU - Ioffe, B. L.
AU - Shifman, M. A.
PY - 1980/1/1
Y1 - 1980/1/1
N2 - 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.
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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U2 - 10.1016/0370-2693(80)90409-8
DO - 10.1016/0370-2693(80)90409-8
M3 - Article
AN - SCOPUS:0001783145
SN - 0370-2693
VL - 95
SP - 99
EP - 102
JO - "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics"
JF - "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics"
IS - 1
ER -