${{\mathit D}_{{{s}}}^{+}}$ Semileptonic Form Factors and Decay Constants

$\mathit f_{{{\mathit D}_{{{s}}}^{+}}}$ $\vert \mathit V_{cs}\vert $ in ${{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \nu}_{{{\tau}}}}$

INSPIRE   JSON  (beta) PDGID:
S034A29
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 247.5 \pm2.3}$ OUR AVERAGE
$252.7$ $\pm3.6$ $\pm4.5$ $\pm0.6$ 2.8k 1
ABLIKIM
2024CG
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at $4.237 - 4.699$ GeV
$248.3$ $\pm3.9$ $\pm3.1$ $\pm1.0$ 2.4k 2
ABLIKIM
2023BP
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at $4.128 - 4.226$ GeV
$246.7$ $\pm3.9$ $\pm3.6$ 2.3k 3
ABLIKIM
2023BX
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at $4.128 - 4.226$ GeV
$251.6$ $\pm5.9$ $\pm4.9$ 1.7k 4
ABLIKIM
2021AF
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4.178, 4.226 GeV
$244.4$ $\pm2.3$ $\pm2.9$ 4.9k 5
ABLIKIM
2021AZ
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4.178, 4.226 GeV
• • We do not use the following data for averages, fits, limits, etc. • •
$243.0$ $\pm5.8$ $\pm4.0$ $\pm1.0$ 950 6, 7
ABLIKIM
2021BE
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4.178, 4.226 GeV
1  ABLIKIM 2024CG uses ${{\mathit \tau}^{+}}$ $\rightarrow$ ( ${{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ , ${{\mathit \mu}^{+}}{{\mathit \nu}_{{{\nu}}}}$ , ${{\mathit \pi}^{+}}$ , ${{\mathit \rho}^{+}}$) ${{\overline{\mathit \nu}}_{{{\tau}}}}$ decays. The third uncertainty is due to the uncertainty of the ${{\mathit D}_{{{s}}}^{+}}$ lifetime.
2  ABLIKIM 2023BP uses ${{\mathit \tau}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\overline{\mathit \nu}}_{{{\tau}}}}$ decays. The third uncertainty is due to the input parameters, mainly the ${{\mathit D}_{{{s}}}^{+}}$ lifetime.
3  ABLIKIM 2023BX uses ${{\mathit \tau}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{{\mu}}}}{{\overline{\mathit \nu}}_{{{\tau}}}}$ decays.
4  ABLIKIM 2021AF uses ${{\mathit \tau}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{0}}{{\overline{\mathit \nu}}}$ decays.
5  ABLIKIM 2021AZ uses ${{\mathit \tau}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}{{\overline{\mathit \nu}}_{{{\tau}}}}$ decays.
6  ABLIKIM 2021BE uses ${{\mathit \tau}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\overline{\mathit \nu}}_{{{\tau}}}}$ decays. When constrained by the Standard Model ratio of $\Gamma ({{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \nu}_{{{\tau}}}})/\Gamma ({{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{{\mu}}}}$) = 9.75, the result is $243.2$ $\pm2.3$ $\pm3.3$ $\pm1.0$.
7  The third uncertainty is dominated by the uncertainty of the ${{\mathit D}_{{{s}}}^{+}}$ lifetime. Superseded by ABLIKIM 2023BP.
References