We present an update on the determination of the leading-order hadronic vacuum polarisation contribution to the muon anomalous magnetic moment in isospin-symmetric QCD by the Extended Twisted Mass Collaboration. The calculation is based on five Nf=2+1+1 gauge ensembles generated with Wilson-clover twisted-mass quarks at maximal-twist and near-physical pion masses, spanning four lattice spacings and two volumes. For the dominant quark-connected contributions, we employ two distinct valence-quark regularisations and present results for both the isovector and isoscalar components.
@article{arxiv.2603.03120,
title = {An update on the HVP contribution to $g_{\mu}{-}2$ in isoQCD from ETMC},
author = {Simone Bacchio and Alessandro De Santis and Antonio Evangelista and Roberto Frezzotti and Giuseppe Gagliardi and Marco Garofalo and Lorenzo Maio and Francesca Margari and Ferenc Pittler and Simone Romiti},
journal= {arXiv preprint arXiv:2603.03120},
year = {2026}
}
Comments
10 pages, 5 figures, Contribution to the 42nd International Symposium on Lattice Field Theory (Lattice2025), 2-8 November 2025, Tata Institute of Fundamental Research, Mumbai, India