$D$ leptonic and semileptonic decays

Abstract

Based on 2.92 fb${}^{-1}$ data taken at the center-of-mass energy $\sqrt{s}=3.773$ GeV with the BESIII detector, we report recent results on the decay constant $f_{D^{+}}$, the hadronic form factors, as well as the quark mixing matrix elements $|V_{cs(d)}|$, which are extracted from analyses of the leptonic decay $D^{+}\to {\mu }^{+}{\nu }_{\mu }$ and the semileptonic decays $D^0\to K(\pi {)}^{-}{e}^{+}{\nu }_e$, $D^{+}\to K_L^0{e}^{+}{\nu }_e$, $D^{+}\to K^{-}{\pi }^{+}{e}^{+}{\nu }_e$ and $D^{+}\to \omega (\varphi )e^{+}{\nu }_e$ at BESIII.

arXiv commentTo be published in the proceedings of CHARM-2015, Detroit, MI, 18-22 May 2015