Analysis on Heavy Quarkonia Transitions with Pion Emission in Terms of the QCD Multipole Expansion and Determination of Mass Spectra of Hybrids

Hong-Wei Ke, Jian Tang, Xi-Qing Hao +1

One of the most important tasks in high energy physics is search for the exotic states, such as glueball, hybrid and multi-quark states. The transitions $\psi (ns)\to \psi (ms)+\pi \pi$ and $Υ(…