https://doi.org/10.1051/epjconf/202023401016
Lattice calculation of the hadronic leading order contribution to the muon g − 2
1
PRISMA+ Cluster of Excellence and Institute for Nuclear Physics, University of Mainz, D-55099 Mainz, Germany
2
Helmholtz Institute Mainz, D-55099 Mainz, Germany
3
John von Neumann Institute for Computing, DESY, Platanenallee 6, D-15738 Zeuthen, Germany
4
Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
a e-mail: hartmut.wittig@uni-mainz.de
Published online: 27 April 2020
The persistent discrepancy of about 3.5 standard deviations between the experimental measurement and the Standard Model prediction for the muon anomalous magnetic moment, aµ, is one of the most promising hints for the possible existence of new physics. Here we report on our lattice QCD calculation of the hadronic vacuum polarisation contribution 
, based on gauge ensembles with Nf = 2 + 1 flavours of O(a) improved Wilson quarks. We address the conceptual and numerical challenges that one encounters along the way to a sub-percent determination of the hadronic vacuum polarisation contribution. The current status of lattice calculations of 
is presented by performing a detailed comparison with the results from other groups.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
