CHARMED MESONS($\mathit C$ = $\pm1$) ${{\mathit D}^{+}}$ = ${\mathit {\mathit c}}$ ${\mathit {\overline{\mathit d}}}$, ${{\mathit D}^{0}}$ = ${\mathit {\mathit c}}$ ${\mathit {\overline{\mathit u}}}$, ${{\overline{\mathit D}}^{0}}$ = ${\mathit {\overline{\mathit c}}}$ ${\mathit {\mathit u}}$, ${{\mathit D}^{-}}$ = ${\mathit {\overline{\mathit c}}}$ ${\mathit {\mathit d}}$, similarly for ${{\mathit D}^{*}}$ 's

#### ${{\mathit D}_{{0}}{(2550)}^{0}}$

$I(J^P)$ = $1/2(0^{-})$
$\mathit J{}^{P} = 0{}^{-}$ determined by AAIJ 2020D.
 ${{\mathit D}_{{0}}{(2550)}^{0}}$ MASS $2549 \pm19$ MeV (S = 4.6)
 ${{\mathit D}_{{0}}{(2550)}^{0}}$ WIDTH $165 \pm24$ MeV (S = 2.0)
 ${{\mathit D}_{{0}}{(2550)}^{0}}$ POLARIZATION AMPLITUDE A$_{{{\mathit D}_{{J}}} }$
 $\Gamma_{1}$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ seen 478
 FOOTNOTES