Hadronic Contributions to New Physics Searches

The hadronic vacuum polarization contribution to aμ from full lattice QCD

29 Sept 2016, 15:35

35m

Muon g-2

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.

Presentation materials

davies-tenerife2016.pdf