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arXiv · hep-lat/0604008

Pseudovector meson with strangeness and closed-charm

TWQCD Collaboration·Ting-Wai Chiu·Tung-Han Hsieh
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Abstract

We investigate the mass spectrum of 1^{+} exotic mesons with quark content (\c\s\cbar\qbar) or (\c\q\cbar\sbar), using molecular and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For the molecular operator {(\qbarγ_i\c)(\cbarγ_5\s)-(\cbarγ_i\s)(\qbarγ_5\c)} and the diquark-antidiquark operator {(\q^T C γ_i \c)(\sbar C γ_5 \cbar^T)- (\q^T C γ_5 \c)(\sbar C γ_i^T \cbar^T)}, both detect a 1^{+} resonance with mass around 4010 +- 50 MeV in the limit m_q -> m_{u,d}.

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TWQCD Collaboration, Ting-Wai Chiu, Tung-Han Hsieh. 2006-07-20. Pseudovector meson with strangeness and closed-charm. https://doi.org/10.1103/physrevd.73.111503%2010.1103%2Fphysrevd.75.019902

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