New results on the hadronic vacuum polarization contribution to the muon g-2

Abstract : Results on the lowest-order hadronic vacuum polarization contribution to the muon magnetic anomaly are presented. They are based on the latest published experimental data used as input to the dispersion integral. Thus recent results on tau -> nu(tau)pi pi(0) decays from Belle and on e(+)e(-) annihilation to pi(+)pi(-) from BABAR and KLOE are included. The new data, together with improved isospin-breaking corrections for tau decays, result into a much better consistency among the different results. A discrepancy between the Standard Model prediction and the direct g-2 measurement is found at the level of 3 sigma.
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Conference papers
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http://hal.in2p3.fr/in2p3-00493262
Contributor : Sabine Starita <>
Submitted on : Friday, June 18, 2010 - 12:02:38 PM
Last modification on : Thursday, January 11, 2018 - 6:14:18 AM

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  • HAL Id : in2p3-00493262, version 1

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M. Davier. New results on the hadronic vacuum polarization contribution to the muon g-2. International Workshop on e+e- Collisions from Phi to Psi (PHIPSI09), Oct 2009, Beijing, China. pp.718-727. ⟨in2p3-00493262⟩

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