Accès ouvert
2019
article
OpenAlex
Mikhail N. Achasov, S. Ahmed, M. Albrecht, M. Alekseev et autres
Using a data sample of $448.1\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }\ensuremath{\psi}(3686)$ events collected at $\sqrt{s}=3.686\text{ }\text{ }\mathrm{GeV}$ with the BESIII detector at the Beijing Electron-Positron Collider II, we search for the rare decay $J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\phi}{e}^{+}{e}^{\ensuremath{-}}$ via $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}J/\ensuremath{\psi}$. No signal events are observed and the upper limit …
cn, ru, de, it, mn, us, tr, nl
(code pays fourni par la source)
Accès ouvert
2019
article
OpenAlex
M. N. Achasov, S. Ahmed, M. Albrecht, A. Amoroso et autres
Using ${e}^{+}{e}^{\ensuremath{-}}$ collision 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 determine the absolute branching fractions $\mathcal{B}({D}^{+}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+})=(3.02\ifmmode\pm\else\textpm\fi{}0.09\ifmmode\pm\else\textpm\fi{}0.08)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$, $\mathcal{B}({D}^{+}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+}{\ensuremath{\pi}}^{0})=(5.07\ifmmode\pm\else\textpm\fi{}0.19\ifmmode\pm\else\textpm\fi{}0.23)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$, $\mathcal{B}({D}^{+}\ensuremath{\rightarrow}{K}_{L}^{0}{K}^{+})=(3.21\ifmmode\pm\else\textpm\fi{}0.11\ifmmode\pm\else\textpm\fi{}0.11)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$, and $\mathcal{B}({D}^{+}\ensuremath{\rightarrow}{K}_{L}^{0}{K}^{+}{\ensuremath{\pi}}^{0})=(5.24\ifmmode\pm\else\textpm\fi{}0.22\ifmmode\pm\else\textpm\fi{}0.22)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$, where the first and second uncertainties …
cn
(code pays fourni par la source)
Accès ouvert
2017
article
OpenAlex
M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai et autres
Using a data set with an integrated luminosity of $2.93\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected at $\sqrt{s}=3.773\text{ }\mathrm{GeV}$ with the BESIII detector operating at the BEPCII storage rings, we search for the rare decay ${D}^{+}\ensuremath{\rightarrow}{D}^{0}{e}^{+}{\ensuremath{\nu}}_{e}$. No signal events are observed. We set the upper …
cn, no, us, de
(code pays fourni par la source)