Measurements of the branching fractions of the singly Cabibbo-suppressed decays D0→ωη, η(')π0 and η(')η

By analyzing a data sample of 2.93 fb−1 collected at ffiffi s p ¼ 3.773 GeV with the BESIII detector operated at the BEPCII storage rings, we measure the branching fractions BðD0 → ωηÞ¼ð2.15 0.17stat 0.15sysÞ × 10−3, BðD0 → ηπ0Þ¼ð0.58 0.05stat 0.05sysÞ × 10−3, BðD0 → η0 π0Þ¼ð0.93 0.11stat 0.09sysÞ × 10−3, BðD0 → ηηÞ¼ð2.20 0.07stat 0.06sysÞ × 10−3 and BðD0 → η0 ηÞ¼ð0.94 0.25stat 0.11sysÞ × 10−3. We note that BðD0 → ωηÞ is measured for the first time and that BðD0 → ηηÞ is measured with much improved precision.