Accès ouvert
2015
article
OpenAlex
M. N. Achasov, X. Ai, O. Albayrak, M. Albrecht et autres
Based on a sample of $1.31\ifmmode\times\else\texttimes\fi{}1{0}^{9}$ $J/\ensuremath{\psi}$ events collected with the BESIII detector at the BEPCII collider, Dalitz plot analyses of selected 79,625 $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ events, 33,908 $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ events, and 1,888 ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ events are performed. The measured matrix elements of $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ are in …
cn, ru, us, de, pk, it, tr, nl
(code pays fourni par la source)
Accès ouvert
2014
article
OpenAlex
M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht et autres
With $1.06\ifmmode\times\else\texttimes\fi{}{10}^{8}$ $\ensuremath{\psi}(3686)$ events collected with the BESIII detector, the branching fraction of $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{+}{K}^{\ensuremath{-}}$ is measured to be $(1.54\ifmmode\pm\else\textpm\fi{}0.04\ifmmode\pm\else\textpm\fi{}0.11)\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}4}$. This is the most precise result to date, due to the largest $\ensuremath{\psi}(3686)$ sample, improved signal reconstruction efficiency, good simulation of the detector …
cn, ru, us, de, it, nl, tr, pk
(code pays fourni par la source)
Accès ouvert
2006
article
OpenAlex
J.Z. Bai, Y. Ban, J. G. Bian, X. Z. Cai et autres
We report measurements of the continuum ${R}_{uds}$ near the center-of-mass energy of 3.70 GeV, the ${R}_{uds(c)+\ensuremath{\psi}(3770)}(s)$ and the ${R}_{\mathrm{had}}(s)$ values in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at 68 energy points in the energy region between 3.650 and 3.872 GeV with the BES-II detector at the …
cn
(code pays fourni par la source)
Accès ouvert
2005
article
OpenAlex
J. Z. Bai, Y. Ban, J. G. Bian, Haoyang Chen et autres
Non-$D\overline{D}$ decay $\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\rho}\ensuremath{\pi}$ is searched for using a data sample of $(17.3\ifmmode\pm\else\textpm\fi{}0.5)\text{ }\text{ }\mathrm{p}{\mathrm{b}}^{\ensuremath{-}1}$ taken at the center-of-mass energy of 3.773 GeV by the BESII detector at the BEPC. No $\ensuremath{\rho}\ensuremath{\pi}$ signal is observed, and the upper limit of the cross section …
cn
(code pays fourni par la source)