Molecular states with hidden charm and strange in QCD Sum Rules

Abstract

This work uses the QCD Sum Rules to study the masses of the $D_s{\bar{D}}_s^{\ast }$ and $D_s^{\ast }{\bar{D}}_s^{\ast }$ 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.

15 pages, 6 figures, 2 tables, to appear in EPL

References in corpus (14)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c
• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV
• Observation of a charged charmoniumlike structure in $e^{+}{e}^{-}\to (D^{\ast }{\bar{D}}^{\ast }{)}^{\pm }{\pi }^{\mp }$ at $\sqrt{s}=4.26$GeV
• Can the X(3872) be a 1^{++} four-quark state?
• The Vector and Axial-Vector Charmonium-like States
• Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$
• Analysis of the Y(4140) with QCD sum rules
• Interpretation of $Z_c(4025)$ as the Hidden Charm Tetraquark States via QCD Sum Rules
• Is $Z_c(3900)$ a molecular state
• $D^{\ast }{\bar{D}}^{\ast }$ molecule interpretation of $Z_c(4025)$
• Could $Z_c(4025)$ be a $J^P=1^{+}$ $D^{\ast }\overline{D^{\ast }}$ molecular state?

Cited by in corpus (9)

• Doubly Heavy Tetraquarks in QCD Sum Rules
• About the exotic structure of $Z_{cs}$
• Tetraquark state candidates: $Y(4140)$, $Y(4274)$ and $X(4350)$
• Tetraquark States with Open Flavors
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• $B\to \rho$ transition form factors within the QCD light-cone sum rules and the $\rho$-meson leading-twist distribution amplitude
• A QCD sum rules calculation of the $J/\psi D_s^{\ast }{D}_s$ strong coupling constant
• Determination of the up/down-quark mass within QCD sum rules in the scalar channel
• Fully strange tetraquark states via QCD sum rules