Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-06-23
AIP Conf.Proc.1182:665-669,2009
Physics
High Energy Physics
High Energy Physics - Experiment
5 pages, proceedings for the CIPANP 2009 conference
Scientific paper
10.1063/1.3293895
The KLOE experiment at the DA$\Phi$NE $\phi$-factory has performed a new precise measurement of the pion form factor using Initial State Radiation events, with photons emitted at small polar angle. Results based on an integrated luminosity of 240 pb$^{-1}$ and extraction of the $\pi\pi$ contribution to $a_\mu$ in the mass range $0.35< M^2_{\pi\pi}<0.95$ GeV$^2$ are presented. The new value of $a^{\pi\pi}_\mu$ has smaller (30%) statistical and systematic error and is consistent with the KLOE published value (confirming the current disagreement between the standard model prediction for $a_\mu$ and the measured value).
for the KLOE Collaboration
Venanzoni Graziano
No associations
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