The Y(4260) as an omega chi_{c1} molecular state

Abstract

It is suggested that the newly observed Y(4260) by BARBAR collaboration is a molecular state composed of an omega and a chi_{c1}. Both the production and decay properties are discussed. A consequence for this molecular state, Y(4260), is that it decays into pi+pi-pi0 chi_{c1} with similar rate to pi+ pi- J/psi. It is also expected that Y(4260) -> pi0 pi0 J/psi is produced at half rate as Y(4260) ->pi+ pi- J/psi. These decay modes should be searched for in the B factories using initial state radiative return data and B decay data as well.

5 pages, 5 figures

References in corpus (10)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays
• Gluonic charmonium resonances at BaBar and Belle?
• Four Quark Interpretation of Y(4260)
• The Possible Interpretations of Y(4260)
• Suppressed decay into open charm for the Y(4260) being an hybrid
• Study of the X(3872) and Y(4260) in B0-->J/psi pi+ pi- K0 and B-->J/psi pi+ pi- K- decays
• Possible Molecular Structure of the Newly Observed Y(4260)
• Charmonium's K2 peak

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• Charmonium Decays of $Y(4260), psi(4160), and psi(4040)
• Is X(3872) {\sl Really} a Molecular State?
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• New Hadron States
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Exploring the threshold behavior and implications on the nature of Y(4260) and $Z_c(3900)$
• One Explanation for the Exotic State Y(4260)
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• Could $Z_b(10610)$ be a $B^{\ast }\bar{B}$ molecular state?
• ${\Lambda }_c^{+}(2940)$: A Possible Molecular State?
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• Determining the upper limit of Gamma_{ee} for the Y(4260)
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• Measurement of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section and search for $e^{+}{e}^{-}\to {\pi }^{0}J/\psi$ at center-of-mass energies between 3.810 and 4.600~GeV
• The bound state problem of S-wave heavy quark meson-aitimeson systems
• Selected strong decay modes of Y(4260)
• Investigating possible decay modes of $Y(4260)$ under the $D_1(2420)\bar{D}+c.c$ molecular state ansatz
• Strong decays of the $XYZ$ states
• The $P$-wave $[cs][\bar{c}\bar{s}]$ tetraquark state: Y(4260) or Y(4660)?
• Exotic $1^{--}$ States in QCD Sum Rules
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
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• Baryonium Study in Heavy Baryon Chiral Perturbation Theory
• $X(4260)$ Revisited: A Coupled Channel Perspective
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• Measurement of $e^{+}{e}^{-}\to {\pi }^0{\pi }^0\psi (3686)$ at $\sqrt{s}$ from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure
• Recent progress on the study of the charmoniumlike states
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• Observation of $e^{+}{e}^{-}\to \eta h_c$ at center-of-mass energies from 4.085 to 4.600 GeV
• Measurements of $e^{+}{e}^{-}\to K_S^0{K}^{\pm }{\pi }^{\mp }{\pi }^0$ and $K_S^0{K}^{\pm }{\pi }^{\mp }\eta$ at center-of-mass energies from $3.90$ to $4.60\mathrm{GeV}$
• Measurements of the branching fractions of ${\eta }_c\to K^{+}{K}^{-}{\pi }^0$, $K_S^0{K}^{\pm }{\pi }^{\mp }$,$2({\pi }^{+}{\pi }^{-}{\pi }^0)$, and $p\bar{p}$
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• Coupled-Channel-Induced $S-D$ mixing of Charmonia and Testing Possible Assignments for $Y(4260)$ and $Y(4360)$
• Evidence for $e^{+}{e}^{-}\to \gamma {\chi }_{c1,2}$ at center-of-mass energies from 4.009 to 4.360 GeV
• Studying the $D_{1}D$ molecule in the Bethe-Salpeter equation approach
• Search for $Z_{s1}^{+}$ and $Z_{s2}^{+}$ strangeonium-like structures
• Heavy Hadron Spectroscopy
• $B^{(\ast )}{\bar{B}}^{(\ast )}$ intermediate state contribution to ${\rm Y}(4S,5S)\to {\eta }_b+\gamma$ radiative decay
• Coupled-channel study of $4S$-$3D$ mixing dynamics in $\psi (4220)$ and $\psi (4380)$
• Pinpointing Physical Solutions in Y(4230) Decays