Remarkable suppression of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ contribution error into muon $g-2$

Abstract

We use the unitary and analytic model of the pion electromagnetic form factor in order to evaluate in the lowest order the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ contribution into the muon magnetic anomaly. We demonstrate, that this technique enables us to reduce the uncertainty of the theoretical prediction importantly in comparison to usual approaches, where the measured data are integrated directly.

5 Latex pages,1 figure. Talk at the HSQCD 2009 Int. Conference, Tatranska Strba, 29.8.3.9.2009, Slovak Republic

References in corpus (11)

• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Improved predictions for g-2 of the muon and α_{\rm QED}(M_Z^2)
• Charged pion form factor between Q^2=0.60 and 2.45 GeV^2. II. Determination of, and results for, the pion form factor
• High-statistics measurement of the pion form factor in the rho-meson energy range with the CMD-2 detector
• Measurement of $\sigma (e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\gamma )$ and extraction of $\sigma (e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-})$ below 1 {\rm GeV} with the KLOE detector
• Update of the e^+e^-\toπ^+π^- cross section measured by SND detector in the energy region 400<\sqrt{s}<1000 MeV
• Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range
• Precision Measurements of the Timelike Electromagnetic Form Factors of Pion, Kaon, and Proton
• The hadronic contribution to (g-2) of the muon
• Measurement of the Pion Form Factor in the Energy Range 1.04-1.38 GeV with the CMD-2 Detector
• Why do we need the new BNL muon g-2 experiment now?