Nov 4 – 8, 2019
Adelaide Convention Centre
Australia/Adelaide timezone

Investigating the anomalous magnetic moment on the lattice

Nov 5, 2019, 2:45 PM
15m
Hall G (Adelaide Convention Centre)

Hall G

Adelaide Convention Centre

Oral Track 6 – Physics Analysis Track 6 – Physics Analysis

Speaker

Alex Westin (The University of Adelaide)

Description

There exists a long standing discrepancy of around 3.5 sigma between experimental measurements and standard model calculations of the magnetic moment of the muon. Current experiments aim to reduce the experimental uncertainty by a factor of 4, and Standard Model calculations must also be improved by a similar order. The largest uncertainty in the Standard Model calculation comes from the QCD contribution, in particular the leading order hadronic vacuum polarisation (HVP). To calculate the HVP contribution, we use lattice gauge theories which allows us to study QCD at low energies. In order to better understand this quantity, we investigate the effect of QED corrections to the leading order HVP term by including QED in our lattice calculations, and investigate flavour breaking effects. This is done using fully dynamical QCD+QED gauge configurations generated by the QCDSF collaboration and a novel method of quark turning.

Consider for promotion No

Primary author

Alex Westin (The University of Adelaide)

Co-authors

Arwed Schiller Gerrit Schierholz (DESY) Hinnerk Stüben Holger Perlt (University of Leipzig) James Zanotti (University of Adelaide) Paul Rakow (University of Liverpool) Roger Horsley (University of Edinburgh) Ross Young (University of Adelaide) Waseem Kamleh (University of Adelaide) Yoshifumi Nakamura

Presentation materials