Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 47: Hadronenstruktur und -spektroskopie

HK 47.1: Group Report

Thursday, March 20, 2014, 16:30–17:00, HZ 1+2

XYZ physics at BESIII experiment — •Zhiqing Liu — Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany

Searching for exotic particles (XYZ particles) with quark content different from conventional baryons and mesons are of high interest in particle physics. Using the large data samples collected above 4 GeV, the BESIII experiment was able to study the XYZ particles in an improve precision. Recently, BESIII has discovered the charged charmoniumlike states Z_c(3900), Z_c(4020)/Z_c(4025), which is obviously good candidates for four quark state. In addition, BESIII also observed the X(3872) particle in Y(4260) radiative transition and Z_c(3900) in DD^* decay channel, which would help us understand their nature in a more deeper way. In this talk, I’ll review all the recent results at the BESIII experiment, together with our future plan toward the study of XYZ physics.