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The more precise determination of hadronic contribution to muonic (g-2) factor and to alpha(M^2_z)

B. V. Geshkenbein
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Abstract

The hadronic vacuum-polarization contribution to the muon anomalous magnetic moment a_{mu}(hadr) and to the value of the eleectromagnetic coupling constant at q^2 = M^2_z are determined more precisely in connection with a new more exact value of the electronic width of rho-meson. The QCD model with infinite number of vector mesons is used. The more precisely determined results are: a_{mu}(hadr) = 678(7)*10^{-10}, δα_{hadr}(M^2_z) = 0.02786(6).

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B. V. Geshkenbein. 2003-04-16. The more precise determination of hadronic contribution to muonic (g-2) factor and to alpha(M^2_z). https://arxiv.org/abs/hep-ph/0301265

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