Speaker
Christine Davies
(University of Glasgow)
Summary
I will report on recent lattice QCD results for the up/down, strange, charm and bottom quark pieces of the hadronic vacuum polarisation contribution
to $a_\mu$ including results at physical u/d quark masses.
In particular I will discuss the recent HPQCD calculation (1601.03071) that gives a total
HVP contribution of $666(6)(12) \times 10^{-10}$ where the systematic error includes
uncertainties from quark-line disconnected diagrams and QED/isospin effects.
This result implies a discrepancy between the current experimental determination of $a_\mu$ and the Standard model of 3$\sigma$.
I will discuss prospects for improvements to this result.
