X(3872) in lattice QCD with exact chiral symmetry

TWQCD Collaboration, Ting-Wai Chiu, Tung-Han Hsieh

We investigate the mass spectrum of $1^{++}$ exotic mesons with quark content $ (\c\q\cbar\qbar) $, using molecular and diquark-antidiquark operators, in quenched lattice QCD wit…