ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2016, vol. 116, 8, p. -
Observation of the Singly Cabibbo-Suppressed Decay D+ →ωπ+ and Evidence for D0 →ωπ0
© 2016 American Physical Society.Based on 2.93 fb-1 e+e- collision data taken at center-of-mass energy of 3.773 GeV by the BESIII detector, we report searches for the singly Cabibbo-suppressed decays D+→ωπ+ and D0→ωπ0. A double tag technique is used to measure the absolute branching fractions B(D+→ωπ+)=(2.79±0.57±0.16)×10-4 and B(D0→ωπ0)=(1.17±0.34±0.07)×10-4, with statistical significances of 5.5σ and 4.1σ, where the first and second uncertainties are statistical and systematic, respectively.