ISSN 0253-2778

CN 34-1054/N

open

Hadronic contribution from light by light processes in (g-2) of muon in nonlocal quark model

  • The hadronic corrections to the muon anomalous magnetic moment αμ, due to the full gauge-invariant set of diagrams with dynamical quark loop and intermediate pseudoscalar and scalar states light-by-light scattering insertions, are calculated in the framework of the nonlocal chiral quark model. These diagrams correspond to all hadronic light-by-light scattering contributions to αμ in the leading order of the 1/Nc expansion in quark model. The result of the quark loop contribution is μHLbL,Loop=(11.0±0.9) ·10-10, and the total result is αμHLbL,NχQM=(16.8±1.2) ·10-10.
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