Accès ouvert
2024
article
OpenAlex
М. Н. Ачасов, P. Adlarson, S. Ahmed, M. Albrecht et autres
Using a data sample of 4.481 × 10 8 ψ ( 3686 ) events collected with the BESIII detector, we report the first observation of the four-lepton-decays J / ψ → e + e − e + e − and J / …
cn, ru, se, de, it, mn, us, tr, gb
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
М. Н. Ачасов, P. Adlarson, S. Ahmed, M. Albrecht et autres
We report on the first search for $\overline{\mathrm{\ensuremath{\Lambda}}}\text{\ensuremath{-}}\mathrm{\ensuremath{\Lambda}}$ oscillations in the decay $J/\ensuremath{\psi}\ensuremath{\rightarrow}p{K}^{\ensuremath{-}}\overline{\mathrm{\ensuremath{\Lambda}}}+\mathrm{c}.\mathrm{c}.$ by analyzing $1.31\ifmmode\times\else\texttimes\fi{}{10}^{9}\text{ }\text{ }J/\ensuremath{\psi}$ events accumulated with the BESIII detector at the BEPCII collider. The $J/\ensuremath{\psi}$ events are produced using ${e}^{+}{e}^{\ensuremath{-}}$ collisions at a center of mass energy …
cn, ru, se, de, it, mn, us, tr, gb, th
(code pays fourni par la source)