Measurement of Born cross sections and effective form factors of e+e−→Ω−Ω¯+ from s=3.7 to 4.7 GeV

Using e⁺e⁻ collision data corresponding to an integrated luminosity of 22.7 fb⁻¹, collected at center-of-mass energies between 3.7 and 4.7 GeV with the BESIII detector at the BEPCII storage ring, we measure the energy-dependent Born cross sections of e+e−→Ω−Ω¯+ and the effective form factors of the Ω⁻ baryon. The analysis employs a single baryon tagging method, and the results are consistent with theoretical predictions, providing critical constraints on the electromagnetic structure of the Ω⁻ hyperon. No significant signal of charmonium or charmonium-like states decaying to Ω−Ω¯+ is observed in the investigated energy range.