Browsing by Author "Ulrich, M.U."

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  • Ablikim, M.; Achasov, M.N.; Ambrose, D.J.; An, F.F.; An, Q.; An, Z.H.; Bai, J.Z.; Ferroli, R.B.; Ban, Y.; Becker, J.; ... (American Physical Society, 2012)
    The two-photon transition $\psi(3686)→\gamma\gamma J/\psi$ is studied in a sample of $1.06×10^8$ $\psi(3686)$ decays collected by the BESIII detector. The branching fraction is measured to be $(3.1±0.6(\text{stat})_{−1.0 ...
  • Ablikim, M.; Achasov, M.N.; Ambrose, D.J.; An, F.F.; An, Q.; An, Z.H.; Bai, J.Z.; Ban, Y.; Becker, J.; Berger, N.; ... (American Physical Society, 2012)
    Using a data sample containing $1.06×10^8 ψ^′$ events collected with the BESIII detector at the BEPCII electron-positron collider, we search for a light exotic particle X in the process $ψ′→π^+π^−J/ψ, J/ψ→γX, X→μ^+μ^−$. ...

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