TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.16.031
TI  - A continuum determination of the strong isospin-breaking contribution to the muon anomalous magnetic moment
PY  - 2025/07/15
UR  - https://www.scipost.org/SciPostPhysProc.16.031
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 16
SP  - 031
A1  - Maltman, Kim
AU  - Pawley, Christopher James
AU  - Lewis, Randy
AB  - First-principles lattice determinations of the Standard Model expectation for the leading order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon have become sufficiently precise that further improvement requires including strong and electromagnetic isospin-breaking effects. We provide a continuum estimate of the strong isospin-breaking contribution, $a_\mu^{SIB}$, using $SU(3)$ chiral perturbation theory. The result is shown to be dominated by resonance-region contributions encoded in a single low-energy constant whose value is known from flavor-breaking hadronic $\tau$ decay sum rules. Implications of the form of the result for lattice determinations of $a_\mu^{SIB}$ are also discussed.
ER  -

@Article{10.21468/SciPostPhysProc.16.031,
	title={{A continuum determination of the strong isospin-breaking contribution to the muon anomalous magnetic moment}},
	author={Kim Maltman and Christopher James and Randy Lewis},
	journal={SciPost Phys. Proc.},
	pages={031},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.16.031},
	url={https://scipost.org/10.21468/SciPostPhysProc.16.031},
}