Anomalous magnetic moment of the muon with dynamical QCD+QED



Westin, Alex, Kamleh, Waseem, Young, Ross, Zanotti, James, Horsley, Roger, Nakamura, Yoshifumi, Perlt, Holger, Rakow, Paul ORCID: 0000-0003-4486-2158, Schierholz, Gerrit and Stüben, Hinnerk
(2020) Anomalous magnetic moment of the muon with dynamical QCD+QED. .

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Abstract

<jats:p>There exists a long standing discrepancy of around 3.5<jats:italic>σ</jats:italic> 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 factor. 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 theory, 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 tuning.</jats:p>

Item Type: Conference or Workshop Item (Unspecified)
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 15 Jul 2021 08:22
Last Modified: 15 Mar 2024 15:19
DOI: 10.1051/epjconf/202024506035
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3130071