Abstract: | The processes $X(3872) o D^{*0}ar{D^{0}}+c.c.,~gamma J/psi,~gamma
psi(2S),$ and $gamma D^{+}D^{-}$ are searched for in a $9.0~
m fb^{-1}$ data
sample collected at center-of-mass energies between $4.178$ and $4.278$ GeV
with the BESIII detector. We observe $X(3872) o D^{*0}ar{D^{0}}+c.c.$ and
find evidence for $X(3872) ogamma J/psi$ with statistical significances of
$7.4sigma$ and $3.5sigma$, respectively. No evident signals for
$X(3872) ogammapsi(2S)$ and $gamma D^{+}D^{-}$ are found, and upper limits
on the relative branching ratio $R_{gamma psi}
equivfrac{mathcal{B}(X(3872) ogammapsi(2S))}{mathcal{B}(X(3872) ogamma
J/psi)}$ are set at $90\%$ confidence level. Measurements are also reported of
the branching ratios for $X(3872) o D^{*0}ar{D^{0}}+c.c.,
~gammapsi(2S),~gamma J/psi$, $gamma D^{+}D^{-}$, as well as the
non-$D^{*0}ar{D^{0}}$ three-body decays $pi^0D^{0}ar{D^{0}}$ and $gamma
D^{0}ar{D^{0}}$, relative to $X(3872) opi^+pi^- J/psi$. |