Can the X(4350) narrow structure be a $1^{-+}$ exotic state?

Abstract

Using the QCD sum rules we test if the new narrow structure, the X(4350) recently observed by the Belle Collaboration, can be described as a $J^{PC}=1^{-+}$ exotic $D_s^{\ast }{D}_{s0}^{\ast }$ molecular state. We consider the contributions of condensates up to dimension eight, we work at leading order in ${\alpha }_s$ and we keep terms which are linear in the strange quark mass $m_s$. The mass obtained for such state is $m_{D_s^{\ast }{D}_{s0}^{\ast }}=(5.05\pm 0.19)$ GeV. We also consider a molecular $1^{-+},D^{\ast }{D}_0^{\ast }$ current and we obtain $m_{D^{\ast }{D}_0^{\ast }}=(4.92\pm 0.08)$ GeV. We conclude that it is not possible to describe the X(4350) structure as a $1^{-+}{D}_s^{\ast }{D}_{s0}^{\ast }$ molecular state.

7 pages, 4 figures

References in corpus (13)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Can the X(3872) be a 1^{++} four-quark state?
• Hadronic molecule structure of the Y(3940) and Y(4140)
• Y(4143) is probably a molecular partner of Y(3930)
• A QCD sum rule calculation for the Y(4140) narrow structure
• Erratum: QCD sum rules study of the $J^{PC}=1^{--}$ charmonium $Y$ mesons
• QCD sum rules study of the meson Z^+(4430)
• Possible Molecular States of $D_s^{\ast }{\bar{D}}_s^{\ast }$ System and Y(4140)
• The meson $Z^{+}(4430)$ as a tetraquark state
• Can the ${\pi }^{+}{\chi }_{c1}$ resonance structures be $D^{\ast }{\bar{D}}^{\ast }$ and $D_1\bar{D}$ molecules?
• Width of exotics from QCD sum rules : tetraquarks or molecules?
• The line shape of the radiative open-charm decay of Y(4140) and Y(3930)

Cited by in corpus (13)

• The hidden-charm pentaquark and tetraquark states
• New Charmonium States in QCD Sum Rules: a Concise Review
• The Vector and Axial-Vector Charmonium-like States
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Could $Z_b(10610)$ be a $B^{\ast }\bar{B}$ molecular state?
• Tetraquark state candidates: $Y(4140)$, $Y(4274)$ and $X(4350)$
• QCD sum rule calculation for the charmonium-like structures in the J/psi phi and J/psi omega invariant mass spectra
• Hidden charmed states and multibody color flux-tube dynamics
• Analysis of the X(4350) as a scalar $\bar{c}c$ and $D_s^{\ast }{\bar{D}}_s^{\ast }$ mixing state with QCD sum rules
• Exotic B_c-like molecules in QCD Sum Rules
• Analysis of the Y(4274) with QCD sum rules
• Investigation of ${\Delta }^0{\Delta }^0$ dibaryon in QCD
• QCD sum rules study of X(4350)