Moment Analysis of Hadronic Vacuum Polarization proposal for a lattice QCD evaluations of muon g-2

by Prof. Eduardo de Rafael (Centre de Physique Théorique - Marsiglia)

Tuesday 17 Jun 2014, 14:30 → 15:30 Europe/Rome

0M04 (Dipartimento di Fisica)

I suggest a new approach to the determination of the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment of the muon a_mu(HVP) in lattice QCD. It is based on properties of the Mellin transform of the hadronic spectral function and their relation to the HVP self energy in the Euclidean. I show how muon a_mu(HVP) is very well approximated by a few moments associated to this Mellin transform and how these moments can be evaluated in lattice QCD, providing thus a series of tests when compared with the corresponding determinations using experimental data.