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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2002 Volume 75, Issue 11, Pages 643–645 (Mi jetpl3116)

This article is cited in 3 papers

FIELDS, PARTICLES, AND NUCLEI

Contribution of the $\mathbf{\pi^0\gamma}$ and $\mathbf{\eta\gamma}$ intermediate states to the vacuum polarization and the muon anomalous magnetic moment

N. N. Achasov, A. V. Kiselev

Laboratory of Theoretical Physics, Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: Using new experimental data, we calculate the contribution to the anomalous magnetic moment of the muon from the $\pi^0\gamma$ and $\eta\gamma$ intermediate states in the vacuum polarization with high precision taking into account the correction for using the trapezoidal rule: $a_{\mu}(\pi^0\gamma)+a_{\mu}(\eta\gamma)=(53.1\pm 1.5)\cdot 10^{-11}$. We also find the small contribution from $e^+e^-\pi^0,\ e^+e^-\eta$ and $\mu^+\mu^-\pi^0$ intermediate states equal to $0.5\cdot 10^{-11}$.

PACS: 13.40.Em, 13.65.+i, 14.60.Ef

Received: 26.04.2002

Language: English


 English version:
Journal of Experimental and Theoretical Physics Letters, 2002, 75:11, 527–529

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