Monte Carlo studies show BESIII data already reaches previously unexplored regions of the dark axion portal via J/ψ → a γ' decays, with STCF projected to improve sensitivity by about an order of magnitude.
Axion mediated photon to dark photon mixing
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abstract
The interaction between the dark/mirror sector and the ordinary sector is considered, where the two sectors interact with each other by sharing the same QCD axion field. This feature makes the mixing between ordinary and dark/mirror photons in ordinary and dark electromagnetic fields possible. Perturbative solutions of the equations of motion describing the evolution of fields in ordinary and dark external magnetic fields are found. User-friendly quantities such as transition probability rates and Stokes parameters are derived. Possible astrophysical and cosmological applications of this model are suggested.
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hep-ph 1years
2026 1verdicts
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Probing the dark axion portal via $J/\psi$ decays at BESIII and STCF
Monte Carlo studies show BESIII data already reaches previously unexplored regions of the dark axion portal via J/ψ → a γ' decays, with STCF projected to improve sensitivity by about an order of magnitude.