22-29 July 2015
Europe/Vienna timezone

Exotic and Charmonium(-like) states at BESIII

Jul 23, 2015, 10:00 AM
15m
talk QCD and Hadronic Physics QCD and Hadronic Physics

Speaker

Yutie Liang (Giessen University)

Description

The BESIII Experiment at the Beijing Electron Positron Collider (BEPCII) has accumulated the world's largest samples of $e^+e^-$ collisions in the tau-charm region. From the collected samples, which include $e^+e^-$ annihilations at J/psi, psi(2S), psi(3770) peaks and in the region from 4 GeV to 4.6 GeV, BESIII has produced many new results in the spectroscopy, transitions, and decays of charmonium(-like) states. This talk will review the current status of these analyses, which cover a wide range of topics from radiative and hadronic transitions among charmonium states, the productions and decays of the $XYZ$ states. Especially, the analysis of these samples has resulted in a number of surprising discoveries of the electrically charged "Zc" structures, which, if resonant, cannot be accommodated in the traditional charm quark and anti-charm quark picture of charmonium. In this talk, we will review the current status of the analyses of the Zc structures, as well as a number of other interesting features in the new BESIII data samples.

Primary author

Presentation materials