Strange and charm contributions to the HVP from C* boundary conditions
Anian Altherr, Lucius Bushnaq, Isabel Campos, Marco Catillo,, Alessandro Cotellucci, Madeleine Dale, Patrick Fritzsch, Roman Gruber, Javad, Komijani, Jens L\"ucke, Marina Krsti\'c Marinkovi\'c, Sofie Martins, Agostino, Patella, Nazario Tantalo, Paola Tavella
TL;DR
This paper reports preliminary lattice QCD results for strange and charm quark contributions to the muon's anomalous magnetic moment, using C* boundary conditions and comparing discretizations to improve signal quality.
Contribution
It introduces a novel calculation of strange and charm contributions to HVP with C* boundary conditions on specific ensembles, providing new insights into lattice discretization effects.
Findings
Preliminary results for strange and charm contributions to HVP.
Comparison of signal-to-noise ratios for different discretizations.
Analysis performed at unphysical pion mass on selected lattice volumes.
Abstract
We present preliminary results for the determination of the leading strange and charm quark-connected contributions to the hadronic vacuum polarization contribution to the muon's g-2. Measurements are performed on the RC* collaboration's QCD ensembles, with 3+1 flavors of O(a) improved Wilson fermions and C* boundary conditions. The HVP is computed on a single value of the lattice spacing and two lattice volumes at unphysical pion mass. In addition, we compare the signal-to-noise ratio for different lattice discretizations of the vector current.
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