A Uniform Description of the States Recently Observed at B-factories

Abstract

The newly found states Y(4260), Y(4361), Y(4664) and Z${}^{\pm }$(4430) stir broad interest in the study of spectroscopy in a typical charmonium scale. The Y(4260) which was observed earlier has been interpreted as hybrid, molecular state, and baryonium, etc. In this note we show for the first time that these new structures, which are hard to be interpreted as charmonium states, can be systematically embedded into an extended baryonium picture. According to this assignment, the so far known characters of these states are understandable. And, in the same framework, we make some predictions for experimenters to measure in the future.

6 pages in Latex. to appear in J.Phys.G

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• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
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Cited by in corpus (21)

• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• Higher Charmonia and X,Y,Z states with Screened Potential
• The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
• Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$
• Hidden-charm and radiative decays of the Z(4430) as a hadronic D_1 \bar{D^\ast} bound state
• Observation of Three Charmoniumlike States with $J^{PC}=1^{--}$ in $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}{\pi }^{+}$
• Hidden-bottom and -charm hexaquark states in QCD sum rules
• ${\mathrm{Z}}^{+}(4430)$ and Analogous Heavy Flavor States
• Line Shapes of the Z(4430)
• Light baryonium spectrum
• Observation of resonance structures in $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\psi }_2(3823)$ and mass measurement of ${\psi }_2(3823)$
• Could $Y_b(10890)$ be the P-wave $[bq][\bar{b}\bar{q}]$ tetraquark state?
• Study of ${\Lambda }_c$${\Lambda }_c$ dibaryon and ${\Lambda }_c$${\bar{\Lambda }}_c$ baryonium states via QCD sum rules
• Possible tetraquark states in the ${\pi }^{+}{\chi }_{c1}$ invariant mass distribution
• The two-body open charm decays of $Z^{+}(4430)$
• Where are the hidden-charm hexaquarks?
• Colloquium: Hadron Production in Open-charm Meson Pair at $e^{+}{e}^{-}$ Collider
• Double-charm and hidden-charm hexaquark states under the complex scaling method
• Spectrum of Light Hexaquark States in Triquark-antitriquark Configuration
• Study of the $Y(4660)$ from a light-quark perspective
• Baryons and baryoniums in the perspective of QCD sum rules