2024
conference-paper
OpenAlex
Teng-Sheng Su, Shan-Ru Hu, Hui-ting Liang, Yi Xu et autres
In recent years, due to the rise of e-commerce platforms and the impact of the Covid-19 epidemic, the number of consumers shopping online has increased significantly. With the advancement of equipment technology, more and more unmanned equipment has gradually integrated into our …
tw
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Mikhail N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht et autres
Using a sample of $(10.09\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}{10}^{9}$ $J/\ensuremath{\psi}$ events collected with the BESIII detector, a partial wave analysis of $J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}^{\ensuremath{'}}{\ensuremath{\eta}}^{\ensuremath{'}}$ is performed. The masses and widths of the observed resonances and their branching fractions are reported. The main contribution is from $J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}{f}_{0}(2020)$ with ${f}_{0}(2020)\ensuremath{\rightarrow}{\ensuremath{\eta}}^{\ensuremath{'}}{\ensuremath{\eta}}^{\ensuremath{'}}$, …
cn, ru, se, de, it, mn, us, tr, gb
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Mikhail N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht et autres
Abstract Using data collected with the BESIII detector in e+e− collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32 fb−1 of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the $$ {D}_s^{+} $$ D s …
cn, ru, se, de, it, mn, us, tr, gb
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Mikhail N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht et autres
Using $6.32\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of ${e}^{+}{e}^{\ensuremath{-}}$ collision data recorded by the BESIII detector at center-of-mass energies between 4.178 to 4.226 GeV, we present the first measurement of the decay ${D}_{s}^{+}\ensuremath{\rightarrow}{f}_{0}(980){e}^{+}{\ensuremath{\nu}}_{e},\phantom{\rule{0ex}{0ex}}{f}_{0}(980)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$. The product branching fraction of ${D}_{s}^{+}\ensuremath{\rightarrow}{f}_{0}(980){e}^{+}{\ensuremath{\nu}}_{e},{f}_{0}(980)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ is measured to be $(7.9\ifmmode\pm\else\textpm\fi{}1.{4}_{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}0.{4}_{\mathrm{syst}})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, with …
cn, ru, se, de, it, mn, us, tr, gb
(code pays fourni par la source)