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arXiv · 1309.7596

Molecular states with hidden charm and strange in QCD Sum Rules

Cong-Feng Qiao·Liang Tang
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Abstract

This work uses the QCD Sum Rules to study the masses of the $D_s \bar{D}_s^*$ and $D_s^* \bar{D}_s^*$ molecular states with quantum numbers $J^{PC} = 1^{+-}$. Interpolating currents with definite C-parity are employed, and the contributions up to dimension eight in the Operator Product Expansion (OPE) are taken into account. The results indicate that two hidden strange charmonium-like states may exist in the energy ranges of $3.83 \sim 4.13 $ GeV and $4.22 \sim 4.54 $ GeV, respectively. The hidden strange charmonium-like states predicted in this work may be accessible in future experiments, e.g. BESIII, BelleII and SuperB. Possible decay modes, which may be useful in further research, are predicted.

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Cong-Feng Qiao, Liang Tang. 2014-07-08. Molecular states with hidden charm and strange in QCD Sum Rules. https://doi.org/10.1209/0295-5075%2F107%2F31001

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