Bochum 2018 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Hauptvorträge I

HK 15.1: Hauptvortrag

Dienstag, 27. Februar 2018, 11:00–11:30, Audimax

Lattice QCD calculations and the muon anomalous magnetic moment — •Antoine Gerardin — Institute for Nuclear Physics, Mainz

The anomalous magnetic moment of the muon is one of the most promising observables to identify hints for physics beyond the Standard Model of particle physics. This quantity exhibits a persistent discrepancy of 3.5 standard deviations between the direct measurement by the Brookhaven E821 Collaboration and its theoretical prediction based on the Standard Model. Two new experiments (E989 at Fermilab and E34 at J-PARC) should reduce the experimental error by a factor four in the next few years. A similar reduction of the theory error is therefore highly desirable. The later is now dominated by effects of the strong interaction between quarks and gluons (QCD): the contribution from the hadronic vacuum polarization (HVP) and from hadronic light-by-light scattering (HLbL). I will discuss recent progress on determination of hadronic contributions from lattice QCD calculations.