A new approach to evaluate the leading hadronic corrections to the muon g-2

Abstract

We propose a novel approach to determine the leading hadronic corrections to the muon g-2. It consists in a measurement of the effective electromagnetic coupling in the space-like region extracted from Bhabha scattering data. We argue that this new method may become feasible at flavor factories, resulting in an alternative determination potentially competitive with the accuracy of the present results obtained with the dispersive approach via time-like data.

7 pages, 3 figures. Version accepted for publication in Phys. Lett. B

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