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  • Open Access

Strange quark electric dipole moment with topological anomalies

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu, and Bin Wu

  • School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China

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Phys. Rev. D 113, 115051 – Published 22 June, 2026

DOI: https://doi.org/10.1103/rvzl-q4t1

Abstract

We introduce an anomaly-based framework to probe quark electric dipole moments in exclusive hadronic final states produced in e+e− annihilation. Chern-Simons-induced anomalous couplings yield a clean T-odd asymmetry AT from interference between the Standard-Model amplitude and dipole-moment contributions. As an application, γ*→K+K−π0 provides direct sensitivity to the strange-quark electric dipole moment (EDM) ds in the chiral limit. The precision on ds can reach O(10−16)  e cm with existing CMD–3 data and O(10−18)  e cm using current J/ψ samples at BESIII, improving the current direct constraint from hyperon EDM by two to three orders.

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Phys. Rev. D 113, 115051– Published 22 June, 2026
  • Received 20 February 2026
  • Accepted 5 June 2026
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