Measurement of branching fractions of Λ⁺_c decays to Σ⁺η and Σ⁺η' 

By analyzing e⁺e⁻ collision data taken at center-of-mass energies √s between 4.600 and 4.699 GeV with the BESIII detector at the BEPCII collider, corresponding to an integrated luminosity of 4.5 fb⁻¹, we study the hadronic decays Λ_c⁺ → Σ⁺η and Λ_c⁺ → Σ⁺η′ using the single-tag method. The branching fraction ratio of Λ_c⁺ → Σ +η relative to Λ_c⁺ → Σ⁺π⁰ is determined to be 0.305 ± 0.046_stat. ± 0.007_syst., and that of Λ_c⁺ → Σ⁺η′ relative to Λ^c₊ → Σ⁺ω is 0.336 ± 0.094_stat. ± 0.037_syst.. The ratio of B(Λ_c⁺ →Σ⁺η′) / B(Λ^c₊ →Σ⁺η) is determined to be 1.73 ± 0.22_stat. ± 0.16_syst.. These results enrich our knowledge of charmed baryon decays.