${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{-}}$ / ${{\mathit \pi}^{-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}$ FORM FACTORS

$\mathit f_{+}(0)\vert \mathit V_{cd}\vert $ in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}$

INSPIRE   JSON  (beta) PDGID:
S032FP0
VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 0.1436 \pm0.0026}$ OUR AVERAGE  Error includes scale factor of 1.5.  See the ideogram below.
$0.1435$ $\pm0.0018$ $\pm0.0009$ 6.3k 1
ABLIKIM
2015X
 BES3 ${{\mathit \ell}}={{\mathit e}}$, 2-parameter fit
$0.1374$ $\pm0.0038$ $\pm0.0024$ 5.3k 2
LEES
2015F
 BABR ${{\mathit \ell}}={{\mathit e}}$, 3-parameter fit
$0.152$ $\pm0.005$ $\pm0.001$
BESSON
2009
CLEO ${{\mathit \ell}}={{\mathit e}}$, 3-parameter fit
1  The 3-parameter fit yields $0.1420$ $\pm0.0024$ $\pm0.0010$.
2  LEES 2015F reports a value $0.1374$ $\pm0.0038$ $\pm0.0022$ $\pm0.0009$, where the last uncertainty is due to the uncertainties of the ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$ branching fraction.

           $\mathit f_{+}(0)\vert \mathit V_{cd}\vert $ in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}$
References