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9 papers
Two-photon widths of the states and helicity analysis for $χ_{c2}\arγγ$}
BESIII Collaboration, M. Ablikim, M. N. Achasov +354
Based on a data sample of 106 M events collected with the BESIII detector, the decays $ψ^{\prime}\arγχ_{c0, 2}$,$χ_{c0, 2}\arγγ$ are studied to determine the two-photo…
Study of and
BESIII Collaboration, M. Ablikim, M. N. Achasov +354
The decays and have been investigated with a sample of 225.2 million events collected with the BESIII detector at the BEPCII coll…
Evidence for the Direct Two-Photon Transition from to
BESIII Collaboration, M. Ablikim, M. N. Achasov +354
The two-photon transition is studied in a sample of 106 million decays collected by the BESIII detector. The branching fraction is measured to be $(3.1\…
Precision measurement of the branching fractions of J/psi -> pi+pi-pi0 and psi' -> pi+pi-pi0
BESIII Collaboration, M. Ablikim, M. N. Achasov +345
We study the decays of the J/psi and psi' mesons to pi+pi-pi0 using data samples at both resonances collected with the BES III detector in 2009. We measure the corresponding branch…
First observation of decays into
BESIII Collaboration, M. Ablikim, M. N. Achasov +332
The decays and are analyzed using a sample of 225 million $\jpsi$ events collected with the BESIII detector. The decay of $η…
Measurements of the mass and width of the eta_c using psi' -> gamma eta_c
BESIII Collaboration, M. Ablikim, M. N. Achasov +332
The mass and width of the lowest lying S-wave spin singlet charmonium state, the eta_c, are measured using a data sample of 1.06x10^8 psi' decays collected with the BESIII detector…