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7 papers · 1 filter
Spin-Parity Analysis of ppbar Mass Threshold Structure in J/psi and psi' Radiative Decays
BESIII Collaboration
A partial wave analysis of the mass-threshold enhancement in the reaction is used to determine: its quantum numbers to be ; i…
Higher-order multipole amplitude measurement in
BESIII Collaboration
Using events collected with the BESIII detector at the BEPCII storage ring, the higher-order multipole amplitudes in the radiative transition $ψ(2S)\toγχ_{c…
Search for a light exotic particle in J/psi radiative decays
BESIII Collaboration
Using a data sample containing 1.06x10^8 psi' events collected with the BESIII detector at the BEPCII electron-positron collider, we search for a light exotic particle X in the pro…
On the optimal measurement for quantum discord of two-qubit states
Mingjun Shi, Chunxiao Sun, Fengjian Jiang +2
We present an efficient method to solve the quantum discord of two-qubit X states exactly. A geometric picture is used to clarify whether and when the general POVM measurement is s…
Study of resonant structure around 1.8 GeV/ and in
BESIII Collaboration
We present results of a study of the decay using a sample of events collected by the BESIII detector, and report the observ…
Observation of decays into vector meson pairs , , and
M. Ablikim, M. N. Achasov, L. An +319
Decays of to vector meson pairs , and are observed for the first time using $\psip$ events accumulated at the BESIII detector at the B…