The leading order hadronic contribution to the anomalous magnetic moment of the muon

Rövid cím: 
The anomalous magnetic moment of the muon
2017. 04. 21. 10:15
BME Fizikai Intézet, Elméleti Fizika Tanszék, Budafoki út 8. F-épület, III lépcsőház, szemináriumi szoba
Bálint Tóth (Wuppertal)

The anomalous magnetic moment of the muon is one of the most precisely measured physical quantities. Comparing its experimental value to the theoretical prediction of the Standard Model (SM) provides a stringent test of SM, and a possible disagreement can indicate new physics. The dominant source of uncertainty in the recent theoretical determinations is the hadronic loop corrections arising from the hadronic vacuum polarization (HVP). Due to the large coupling constant of the strong interaction at low energies, the HVP contribution is only accessible by non-perturbative methods. In the talk I will discuss how the hadronic contributions can be addressed non-perturbatively using lattice QCD, then I will present recent results on the leading order hadronic contribution obtained by the Budapest-Marseille-Wuppertal collaboration.