W. D. Li

Cross section measurement of $e^+e^-\to \eta\psi(2S)$ and search for $e^+e^-\to\eta\tilde{X}(3872)$

BESIII Collaboration, М. Н. Ачасов, P. Adlarson, O. Afedulidis et autres

The energy-dependent cross section for $e^+e^-\to \eta\psi(2S)$ is measured at eighteen center of mass energies from 4.288 GeV to 4.951 GeV using the BESIII detector. Using the same data samples, we also perform the first search for the reaction $e^+e^-\to\eta\tilde{X}(3872)$, but no …

Search for ψ(2S) production in e+e− annihilations at 4.03 GeV

J. Z. Bai, J. G. Bian, I. Blum, Z. W. Chai et autres

A search is performed for the production of the $\ensuremath{\psi}(2S)$ in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at a center-of-mass energy of 4.03 GeV using the BES detector operated at the Beijing Electron Positron Collider (BEPC). The kinematic features of the reconstructed $\ensuremath{\psi}(2S)$ signal are consistent …

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