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arXiv · 1502.04487

Dynamical quark loop light-by-light contribution to muon g-2 within the nonlocal chiral quark model

A. E. Dorokhov·A. E. Radzhabov·A. S. Zhevlakov
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Abstract

The hadronic corrections to the muon anomalous magnetic moment a_mu, due to the gauge-invariant set of diagrams with dynamical quark loop light-by-light scattering insertions, are calculated in the framework of the nonlocal chiral quark model. These results complete calculations of all hadronic light-by-light scattering contributions to a_mu in the leading order in the 1/Nc expansion. The result for the quark loop contribution is a_mu^{HLbL,Loop}=(11.0+-0.9)*10^(-10), and the total result is a_mu^{HLbL,NxQM}=(16.8+-1.2)*10^(-10).

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A. E. Dorokhov, A. E. Radzhabov, A. S. Zhevlakov. 2015-07-24. Dynamical quark loop light-by-light contribution to muon g-2 within the nonlocal chiral quark model. https://doi.org/10.1140/epjc%2Fs10052-015-3577-4

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