Computing the hadronic vacuum polarisation from lattice QCD

by Marina Marinkovic (CERN)

Monday 13 Apr 2015, 14:30 → 16:00 Europe/Rome

Aula Conversi (Dip. di Fisica - Edificio G. Marconi)

Anomalous magnetic moment of the muon, a_mu=(g-2)_mu/2, is one of the
most precisely measured quantities in particle physics and it provides
a stringent test of the standard model. With the planned improvement
of the experimental precision at Fermilab and at J-PARC further
reduction of the theoretical uncertainty is required, in order to be
able to resolve the current discrepancy between the experimental
measurement of a_mu and its theoretical prediction and potentially
gain insight into new physics. The dominant source of the uncertainty
in the theoretical prediction of a_mu is the error of the leading
hadronic contribution. I will introduce several promising approaches
for a precise determination of the leading hadronic contribution to
a_mu and discuss the challenges for obtaining this quantity from
lattice QCD simulations with sub-percent precision.

Slides marinkovic.pdf