Single meson contributions to the muon`s anomalous magnetic moment

Jan 4, 2014
8 pages
Published in:
  • Eur.Phys.J.C 74 (2014) 8, 3008
  • Published: Aug 9, 2014
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Abstract: (Springer)
We develop the formalism to provide an improved estimate for the hadronic light-by-light correction to the muon’s anomalous magnetic moment aμa_\mu , by considering single meson contributions beyond the leading pseudoscalar mesons. We incorporate available experimental input as well as constraints from light-by-light scattering sum rules to estimate the effects of axial-vector, scalar, and tensor mesons. We give numerical evaluations for the hadronic light-by-light contribution of these states to aμa_\mu . The presented formalism allows one to further improve on these estimates, once new data for such meson states will become available.
Note:
  • 13 pages, 3 figures
  • photon photon: scattering
  • muon: magnetic moment
  • magnetic moment: anomaly
  • pseudoscalar meson
  • axial-vector meson
  • tensor meson
  • form factor: transition
  • sum rule
  • numerical calculations
  • new physics