Accès ouvert
2013
article
OpenAlex
M. N. Achasov, X. Ai, O. Albayrak, D. Ambrose et autres
Using a sample of $1.06\ifmmode\times\else\texttimes\fi{}{10}^{8}\ensuremath{\psi}(3686)$ events collected with the BESIII detector at BEPCII, the decays ${\ensuremath{\eta}}_{c}(2S)\ensuremath{\rightarrow}p\overline{p}$ and ${h}_{c}\ensuremath{\rightarrow}p\overline{p}$ are searched for, where ${\ensuremath{\eta}}_{c}(2S)$ and ${h}_{c}$ are reconstructed in the decay chains $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c}(2S)$, ${\ensuremath{\eta}}_{c}(2S)\ensuremath{\rightarrow}p\overline{p}$ and $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{h}_{c}$, ${h}_{c}\ensuremath{\rightarrow}p\overline{p}$, respectively. No significant signals are observed. …
cn, ru, us, it, nl, tr, de, pk
(code pays fourni par la source)
Accès ouvert
2010
article
OpenAlex
M. N. Achasov, L. An, Q. An, Zhenghua An et autres
We present measurements of the charmonium state ${h}_{c}(^{1}P_{1})$ made with $106\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${\ensuremath{\psi}}^{\ensuremath{'}}$ events collected by BESIII at BEPCII. Clear signals are observed for ${\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{h}_{c}$ with and without the subsequent radiative decay ${h}_{c}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c}$. First measurements of the absolute branching ratios $\mathcal{B}({\ensuremath{\psi}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{h}_{c})=(8.4\ifmmode\pm\else\textpm\fi{}1.3\ifmmode\pm\else\textpm\fi{}1.0)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ and $\mathcal{B}({h}_{c}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c})=(54.3\ifmmode\pm\else\textpm\fi{}6.7\ifmmode\pm\else\textpm\fi{}5.2)%$ …
cn, ru, us, it, de, jp, hk
(code pays fourni par la source)