X. Cai

activity

20042025

most citedThe beam energy measurement system for the Beijing electron-positron collider

69 citations · 312 across the 49 of their papers we have counts for

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Showing 2012Show all

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hep-ex2012★ 10 cited

Evidence for the Direct Two-Photon Transition from $ψ (3686)$ to $J / ψ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +354

The two-photon transition $ψ (3686) \to γ γ J / ψ$ is studied in a sample of 106 million $ψ (3686)$ decays collected by the BESIII detector. The branching fraction is measured to be $(3.1\…

Evidence for the Direct Two-Photon Transition from ψ(3686) to J/ψ

Evidence for the Direct Two-Photon Transition from $ψ (3686)$ to $J / ψ$