On the Leading ORder Hadronic Contribution to (g-2)_mu

Details On the Leading ORder Hadronic Contribution to (g-2)_mu On the Leading ORder Hadronic Contribution to (g-2)_mu

2005-12-26

arxiv.org/abs/hep-ph/0512331v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure; prepared for the proceedings of PANIC'05

Scientific paper

10.1063/1.2220421

Sum rule constraints dominated by the independent high-scale input, alpha_s(M_Z), are shown to be satisfied by I=1 spectral data from hadronic tau decays, but violated by the pre-2005 electroproduction (EM) cross-section data. Determinations of the Standard Model (SM) hadronic contribution to (g-2)_mu incorporating tau decay data are thus favored over those based solely on EM data, implying a SM prediction for (g-2)_mu in agreement with current experimental results.

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