Contribution to a conference proceedings/Contribution to a book

FZJ-2025-05587

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Update on the isospin breaking corrections to the HVP with $C$-periodic boundary conditions

Parato, L. (Corresponding author) ; Altherr, A. ; Campos, I. ; Cotellucci, A.FZJ* ; Gruber, R. ; Harris, T. ; Komijani, J. ; Lücke, J. ; Krstic Marinkovic, M. ; Patella, A. ; Rosso, S. ; Tavella, P.

2025
Sissa Medialab Trieste, Italy

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Please use a persistent id in citations: doi:10.22323/1.466.0119  doi:10.34734/FZJ-2025-05587

Abstract: In the RC$^{\star}$ collaboration, we simulate lattice QCD+QED using $C-$periodic spatial boundary conditions to ensure that locality, gauge invariance, and translational invariance are preserved throughout the calculation. We present our progress in computing isospin-breaking (IB) corrections to the leading hadronic contribution to $(g-2)_\mu$. We compare two ways of including the IB corrections: the RM123 method and dynamical QCD+QED simulations, both with $C-$periodic boundary conditions. The two calculations are performed at $\beta=3.24$ with four flavours of $\mathcal{O}(a)-$improved Wilson fermions; the QCD ensemble features $SU(3)-$symmetric sea quarks plus charm, while down and strange quarks are degenerate in QCD+QED gauge ensembles.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)

Appears in the scientific report 2025

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