Molecular states with hidden charm and strange in QCD Sum Rules
1 School of Physics, University of Chinese Academy of Sciences - YuQuan Road 19A, Beijing 100049, China
2 Collaborative Innovation Center for Particles and Interaction - USTC, HeFei 230026, China
Received: 29 April 2014
Accepted: 7 July 2014
This work uses the QCD Sum Rules to study the masses of the and molecular states with quantum numbers . 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 and , 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.
PACS: 11.55.Hx – Sum rules / 12.38.Lg – Other nonperturbative calculations / 12.39.Mk – Glueball and nonstandard multi-quark/gluon states
© EPLA, 2014