Accès ouvert
2023
article
OpenAlex
М. Н. Ачасов, P. Adlarson, X. Ai, R. Aliberti et autres
Based on a dataset of $(27.12\ifmmode\pm\else\textpm\fi{}0.10)\ifmmode\times\else\texttimes\fi{}{10}^{8}$ $\ensuremath{\psi}(3686)$ events collected at the BESIII experiment, the absolute branching fractions of the three dominant ${\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}$ decays are measured to be ${\mathcal{B}}_{{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}}=\phantom{\rule{0ex}{0ex}}(25.03\ifmmode\pm\else\textpm\fi{}0.44\ifmmode\pm\else\textpm\fi{}0.53)%$, ${\mathcal{B}}_{{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}}=(8.43\ifmmode\pm\else\textpm\fi{}0.52\ifmmode\pm\else\textpm\fi{}0.28)%$, and ${\mathcal{B}}_{{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}{K}^{\ensuremath{-}}}=(66.3\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}2.0)%$, where the first and second uncertainties are statistical and systematic, respectively. …
cn, ru, se, de, it, pl, mn, us, tr, kr, gb
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
М. Н. Ачасов, P. Adlarson, M. Albrecht, R. Aliberti et autres
The decay ${\ensuremath{\eta}}_{c}(2S)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\eta}$ is searched for through the radiative transition $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c}(2S)$ using 448 million $\ensuremath{\psi}(3686)$ events accumulated at the BESIII detector. The first evidence of ${\ensuremath{\eta}}_{c}(2S)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\eta}$ is found with a statistical significance of $3.5\ensuremath{\sigma}$. The product of the branching fractions of $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c}(2S)$ …
cn, ru, se, de, it, pl, mn, us, tr, gb
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
М. Н. Ачасов, P. Adlarson, R. Aliberti, A. Amoroso et autres
Using ${e}^{+}{e}^{\ensuremath{-}}$ annihilation data corresponding to an integrated luminosity of $2.93\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ taken at a center-of-mass energy of 3.773 GeV with the BESIII detector, we report the first measurements of the branching fractions of the inclusive decays ${D}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}X$ and ${D}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}X$, where …
cn, ru, se, de, it, pl, mn, us, tr, gb
(code pays fourni par la source)