Accès ouvert
2025
preprint
OpenAlex
BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres
We search, for the first time, for an exotic molecular state with quantum numbers $J^{PC}=1^{-+}$, called $X$, via the process $e^{+}e^{-} \to γD^{+}_{s} D_{s1}^{-}(2536) +c.c.$ using data samples corresponding to a luminosity of $5.8~\mathrm{fb^{-1}}$ across center-of-mass energies from 4.612 to 4.951~GeV, collected …
Accès ouvert
2015
preprint
OpenAlex
М. Н. Ачасов, X. Ai, O. Albayrak, M. Albrecht et autres
We report the observation of the $X(3823)$ in the process $e^+e^-\to π^+π^-X(3823) \to π^+π^-γχ_{c1}$ with a statistical significance of $6.2σ$, in data samples at center-of-mass energies $\sqrt{s}=$4.230, 4.260, 4.360, 4.420 and 4.600~GeV collected with the BESIII detector at the BEPCII electron positron …
2010
conference-paper
OpenAlex
Zhong Hu, S. H. Zhang
Learning effectiveness is always the central activity in higher education. Teaching delivery modes from face-to-face to online and to blended/hybrid phases reflect the progress and evolution of research and practices in teaching pedagogies. Course design for blended/hybrid learning including redesign of learning …
us
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