Jul 24 – 30, 2016
Highfield Campus, University of Southampton
Europe/London timezone

Isospin-breaking effects for meson masses and HVP, from Lattice QCD + quenched QED

Jul 26, 2016, 3:00 PM
Building B2a Room 2077 (Highfield Campus, University of Southampton)

Building B2a Room 2077

Highfield Campus, University of Southampton

Talk Hadron Structure Hadron Structure


Mr James Harrison (University of Southampton)


Lattice calculations of the leading-order hadronic contribution to the muon g-2, from the hadronic vacuum polarisation, are approaching sub-percent level precision. At this level, it becomes important to consider corrections from isospin-breaking. Here, we include quenched QED in our simulations by stochastically generating U(1) gauge configurations and combining these with existing SU(3) gauge configurations. We will present some first results for meson masses and HVP using this method, obtained on a 24^3 x 64, N_f=2+1 ensemble using domain wall fermions. This calculation will be directly compared to the perturbative approach presented by Vera Gülpers.

Primary author

Mr James Harrison (University of Southampton)


Dr Andreas Jüttner (University of Southampton) Dr Antonin Portelli (The University of Edinburgh) Prof. Christopher Sachrajda (University of Southampton) Dr Vera Gülpers (University of Southampton)

Presentation materials