Speaker
Description
The dispersive approach to QCD, which extends the applicability range of
perturbation theory towards the infrared domain, is applied to the study
of the hadronic vacuum polarization function and related quantities. This
approach merges the intrinsically nonperturbative constraints, which
originate in the kinematic restrictions on the relevant physical
processes, with corresponding perturbative input. The obtained hadronic
vacuum polarization function agrees with pertinent lattice simulation
data. The evaluated hadronic contributions to the muon anomalous magnetic
moment and to the shift of the electromagnetic fine structure constant
conform with recent estimations of these quantities.
[1] A.V.Nesterenko, J. Phys. G42, 085004 (2015).
[2] A.V.Nesterenko, Phys. Rev. D88, 056009 (2013).
[3] M.Baldicchi, A.V.Nesterenko, G.M.Prosperi, and C.Simolo,
Phys. Rev. D77, 034013 (2008).
[4] A.V.Nesterenko and J.Papavassiliou, J. Phys. G32, 1025 (2006).
