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Pseudovector meson with strangeness and closed-charm

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

hep-latarXiv:hep-lat/0604008

Abstract

We investigate the mass spectrum of 1+ exotic mesons with quark content () or (), using molecular and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For the molecular operator (γi)(γ5)-(γi)(γ5) and the diquark-antidiquark operator (T C γi )( C γ5 T)- (T C γ5 )( C γiT T), both detect a 1+ resonance with mass around 4010 +- 50 MeV in the limit mq -> mu,d.

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