8–13 Jun 2025
America/Winnipeg timezone
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Inequality-based QCD Constraints on the Hadronic Vacuum Polarization Contribution to Muon $g-2$

13 Jun 2025, 10:15
15m
Oral (Non-Student) / Orale (non-étudiant(e)) Particle Physics / Physique des particules (PPD) (PPD) F1-1 Particle physics at colliders II and muon g-2 | Physique des particules aux collisionneurs II et muon g-2 (PPD)

Speaker

Siyuan Li

Description

With recent updates on the experimental measurement of the muon’s anomalous magnetic moment ($a_\mu=\left(g-2\right)_\mu/2$) at Fermilab, the discrepancy between experimental results and Standard Model predictions is heightened to $5.0\sigma$. Along with the dependencies between the theoretical predictions from lattice QCD and data-driven methods, we establish upper and lower bounds for the hadronic vacuum polarization (HVP) contribution to the leading-order (LO) muon’s anomalous magnetic moment ($a_\mu^\text{HVP,LO}$) using the finite-energy QCD sum-rules (FESR) and H\"older inequalities.
Our results are evaluated up to five-loop order in perturbation theory in the chiral limit, LO in light-quark mass corrections, next-to-leading order in dimension-four QCD condensates, and LO in dimension-six QCD condensates, offering a path toward resolving the current tension in future investigations of the muon’s anomalous magnetic moment.

Keyword-1 QCD Sum Rules
Keyword-2 Muon Anomalous Magnetic Moment

Author

Siyuan Li

Co-authors

Prof. Tom Steele (University of Saskatchewan) Prof. Jason Ho (Dordt University) Prof. Robin Kleiv (Thompson Rivers University) R Raza K Williams

Presentation materials

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