Projected sensitivity for photon-dark photon mixing parameter (ε) from one-month operation at the Huizhou η factory, assuming 100 MHz inelastic reaction rate. Shaded regions indicate exclusion limits from previous experiments (HPS2015, A1@MAMI, KLOE, NA (IMAGE)

Nuclear Science and Techniques

Projected sensitivity for photon-dark photon mixing parameter (ε) from one-month operation at the Huizhou η factory, assuming 100 MHz inelastic reaction rate. Shaded regions indicate exclusion limits from previous experiments (HPS2015, A1@MAMI, KLOE, NA

Caption

Simulation results indicate that even one month of Huizhou η factory operation could achieve dark photon mixing parameter sensitivity reaching ε2 ~ 10⁻⁷ in the η mass region, surpassing previous experimental limits. This experiment would provide valuable complementary constraint to global dark photon searches. After years of running of the experiment, it will has the potential to significantly rule out the parameter space of the dark photon in low-mass region together with other experiments worldwide.

Credit

Rong Wang

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