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Status of Leading-Order Hadronic Vacuum Polarization Dispersion Calculation

Abstract : The leading-order hadronic contribution to the muon magnetic anomaly aμ≡(gμ−2)/2aμ≡(gμ−2)/2, calculated using a dispersion integral of e+e−e+e− annihilation data and τ decay data, is briefly reviewed. This contribution has the largest uncertainty to the predicted value of aμaμ, which differs from the experimental value by ∼ 3.6 (2.4) standard deviations for the e+e−e+e− (τ) based analysis. New results since the last workshop and main open issues on the subject are discussed.
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http://hal.in2p3.fr/in2p3-00764326
Contributor : Sabine Starita <>
Submitted on : Tuesday, February 12, 2013 - 10:17:39 AM
Last modification on : Wednesday, September 16, 2020 - 4:25:55 PM

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Z. Zhang. Status of Leading-Order Hadronic Vacuum Polarization Dispersion Calculation. 12th International Workshop on Tau Lepton Physics (TAU2012), Sep 2012, Nagoya, Japan. pp.131-134, ⟨10.1016/j.nuclphysbps.2014.09.032⟩. ⟨in2p3-00764326⟩

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