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arXiv · 1302.1896

Status of Leading-Order Hadronic Vacuum Polarization Dispersion Calculation

Zhiqing Zhang
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Abstract

The leading-order hadronic contribution to the muon magnetic anomaly a_{\mu} = (g_{\mu} - 2)/2, calculated using a dispersion integral of e+e- annihilation data and tau decay data, is briefly reviewed. This contribution has the largest uncertainty to the predicted value of a_{\mu}, which differs from the experimental value by ~3.6 (2.4) standard deviations for the e+e- (tau) based analysis. New results since the last workshop and main open issues on the subject are discussed.

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Zhiqing Zhang. 2013-02-07. Status of Leading-Order Hadronic Vacuum Polarization Dispersion Calculation. https://doi.org/10.1016/j.nuclphysbps.2014.09.032

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