SEMILEPTONIC FORM FACTORS

$\mathit f_{+}(0)\vert \mathit V_{cs}\vert $ in ${{\mathit D}^{+}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}$

INSPIRE   JSON  (beta) PDGID:
S031FK0
VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 0.7163 \pm0.0033}$ OUR AVERAGE
$0.7207$ $\pm0.0027$ $\pm0.0035$ 58k
ABLIKIM
2024CN
 BES3 ${{\overline{\mathit K}}^{0}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 2-parameter fit
$0.7124$ $\pm0.0035$ $\pm0.0032$ 47k
ABLIKIM
2024CN
 BES3 ${{\overline{\mathit K}}^{0}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{{\mu}}}}$ 2-parameter fit
$0.707$ $\pm0.010$ $\pm0.009$ 1
BESSON
2009
CLEO ${{\mathit K}_{{{S}}}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 3-parameter fit
• • We do not use the following data for averages, fits, limits, etc. • •
$0.7053$ $\pm0.0040$ $\pm0.0112$ 2
ABLIKIM
2017S
 BES3 ${{\mathit K}_S^0}$ ${{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 2-parameter fit
$0.737$ $\pm0.006$ $\pm0.009$ 3, 2
ABLIKIM
2015AF
 BES3 ${{\mathit K}_{{{L}}}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ 3-parameter fit
1  BESSON 2009 finds $0.716$ $\pm0.007$ $\pm0.009$ for a 2-parameter fit.
2  Superseded by ABLIKIM 2024CN.
3  ABLIKIM 2015AF finds $0.728$ $\pm0.006$ $\pm0.011$ for a 2-parameter fit.
References