Review of recent leading-order hadronic vacuum polarization calculation

2013/12/29 by Zhiqing Zhang, Zhang, Zhiqing
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #hep-ex #hep-ph

paper · pdf · doi:10.48550/arxiv.1312.7549

10 pages, 6 figures, Proceedings of Photon 2013. arXiv admin note: text overlap with arXiv:1302.1896

arxiv created 2013/12/29 · arxiv updated 2013/12/31

Abstract

The leading-order hadronic contribution to the muon magnetic moment anomaly a_μ≡ (g_μ-2)/2, calculated using a dispersion integral of e⁺e^- annihilation data and τ data, is briefly reviewed. This contribution has the largest uncertainty to the predicted value of a_μ, which differs from the direct measurement by ∼ 3.6 (2.4) standard deviations for the e⁺e^- (τ) based analysis. Recent results and main open issues on the subject are discussed.

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