Observation of the singly Cabibbo suppressed decay $D^0\to b_1(1235{)}^{-}{e}^{+}{\nu }_e$ and evidence for $D^{+}\to b_1(1235{)}^0{e}^{+}{\nu }_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +657

By analyzing a data sample of $e^{+}{e}^{-}$ collisions with center-of-mass energy $\sqrt{s}=3.773$~GeV, corresponding to an integrated luminosity of $7.9{\mathrm{fb}}^{-1}$ collected with t…