SEMILEPTONIC FORM FACTORS

$\mathit r_{1}{}\equiv\mathit a_{1}/\mathit a_{0}$ in ${{\mathit D}^{+}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}$

INSPIRE   JSON  (beta) PDGID:
S031FK1
VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -2.13 \pm0.14}$ OUR AVERAGE
$-2.18$ $\pm0.14$ $\pm0.05$
ABLIKIM
2017S
 BES3 ${{\mathit K}_S^0}$ ${{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 2-parameter fit
$-2.23$ $\pm0.42$ $\pm0.53$ 40k 1
ABLIKIM
2015AF
 BES3 ${{\mathit K}_{{{L}}}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 3-parameter fit
$-1.66$ $\pm0.44$ $\pm0.10$ 2
BESSON
2009
CLEO ${{\mathit K}_{{{S}}}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 3-parameter fit
1  ABLIKIM 2015AF finds ${{\mathit r}_{{{1}}}}$ = $-1.91$ $\pm0.33$ $\pm0.28$ for a 2-parameter fit.
2  BESSON 2009 finds ${{\mathit r}_{{{1}}}}$ = $-2.10$ $\pm0.25$ $\pm0.08$ for 2-parameter fit.
References