${{\mathit D}_{{{s}}}^{+}}−{{\mathit D}_{{{s}}}^{-}}$ $\mathit CP$-VIOLATING DECAY-RATE ASYMMETRIES

This is the difference between ${{\mathit D}_{{{s}}}^{+}}$ and ${{\mathit D}_{{{s}}}^{-}}$ partial widths for the decay to state ${{\mathit f}}$, divided by the sum of the widths:$
$ $\mathit A_{CP}({{\mathit f}}$)= [$\Gamma ({{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit f}}$) $−$ $\Gamma ({{\mathit D}_{{{s}}}^{-}}$ $\rightarrow$ ${{\overline{\mathit f}}}$)] $/$ [$\Gamma ({{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit f}})+\Gamma ({{\mathit D}_{{{s}}}^{-}}$ $\rightarrow$ ${{\overline{\mathit f}}}$)].

$\mathit A_{CP}({{\mathit \tau}^{\pm}}{{\mathit \nu}}$) in ${{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \nu}_{{{\tau}}}}$, ${{\mathit D}_{{{s}}}^{-}}$ $\rightarrow$ ${{\mathit \tau}^{-}}{{\overline{\mathit \nu}}_{{{\tau}}}}$

INSPIRE   JSON  (beta) PDGID:
S034A30
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$2.9$ $\pm4.8$ $\pm1.0$ 950 1
ABLIKIM
2021BE
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4.178, 4.226 GeV
1  ABLIKIM 2021BE also reports that 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 ($-0.1$ $\pm1.9$ $\pm1.0)\%$.
References