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

References in corpus (5)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• Threshold effect and π^\pm ψ(2S) peak
• The Charged Z(4433): Towards a New Spectroscopy

Cited by in corpus (5)

• Higher Charmonia and X,Y,Z states with Screened Potential
• ${\mathrm{Z}}^{+}(4430)$ and Analogous Heavy Flavor States
• Line Shapes of the Z(4430)
• Possible tetraquark states in the ${\pi }^{+}{\chi }_{c1}$ invariant mass distribution
• The two-body open charm decays of $Z^{+}(4430)$