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Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster

HK 27.3: Poster

Tuesday, March 28, 2017, 16:45–18:45, F Foyer

Study of χc Decays into Light Hadrons at BESIII — •Iman Keshk for the BESIII collaboration — Ruhr-Universität Bochum, Inst. f. Experimentalphysik I, 44780 Bochum

The BESIII experiment which is located at the symmetric electron-positron ring BEPCII in Beijing has recorded large data samples at center of mass energies corresponding to the ψ(2S) charmonium resonance and other energies in the tau-charm mass range. The radiative transitions ψ(2S)—→γχc provide a good source of charmonium P-wave states. Their radiative decays are experimentally less understood than those of the vector states and provide new insight into the nature of the χc states. Further, exotic states with quantum numbers not accessible in vector charmonium decays can be studied. In this contribution the radiative decays χc—→γφη and χc—→γωη will be discussed based on a data sample corresponding to about 448·106 ψ(2S) events.

Supported by DFG (FOR 2359)

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