X(1870)andη2(1870): Which Can Be Assigned as a Hybrid State?

摘要

The mass spectrum and strong decays of theX(1870)andη2(1870)are analyzed. Our results indicate thatX(1870)andη2(1870)are the two different resonances. The narrowerX(1870)seems likely a good hybrid candidate. We support theη2(1870)as theη2(21D2)quarkonium. We suggest to search the isospin partner ofX(1870)in the channels ofJ/ψ⟶ρf0980πandJ/ψ⟶ρb11235πin the future. The latter channel is very important for testing the hybrid scenario.