Hadron and quarkonium exotica

Abstract

A number of charmonium-(bottomonium-)like states have been observed in B-factory experiments. Recently the BESIII experiment has joined this search with a unique data sample collected at the different center of mass energies ranging from 3.9 GeV to 4.42 GeV in which they found new charmonium-like states with non-zero electric charge. We review the status of experimental searchs for quarkonium-like states and also other types of non-[Formula: see text] meson or non-qqq baryons that are predicted by QCD-motivated models. We mainly focus on results from the B-factories and BESIII.