A plausible explanation of ${\rm Y}(10860)$

Abstract

We show that a good description of the ${\rm Y}(10860)$ properties, in particular the mass, the $e^{+}{e}^{-}$ leptonic widths and the ${\pi }^{+}{\pi }^{-}{\rm Y}(ns)$$(n=1,2,3)$ production rates, can be obtained under the assumption that ${\rm Y}(10860)$ is a mixing of the conventional ${\rm Y}(5s)$ quark model state with the lowest $P-$ wave hybrid state.

arXiv comment13 pages, 3 tables, 2 figures, keywords: quark; meson; potential

References in corpus (14)

• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• QCD forces and heavy quark bound states
• Ab Initio Study of Hybrid b-bar-gb Mesons
• Born-Oppenheimer Approximation for the XYZ Mesons
• Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance
• First observation of the P-wave spin-singlet bottomonium states h_b(1P) and h_b(2P)
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• Amplitude analysis of e+e- => Y(nS)pi+pi- at sqrt(s)=10.865 GeV
• Measurements of the ${\rm Y}(10860)$ and ${\rm Y}(11020)$ resonances via $\sigma (e^{+}{e}^{-}\to {\rm Y}(n\mathrm{S}){\pi }^{+}{\pi }^{-})$
• Do $1^{-}c\bar{c}g$ hybrid meson exist, do they mix with charmonium ?
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• Generalized screened potential model
• Hybrid configuration content of heavy S-wave mesons

Cited by in corpus (9)

• Pentaquark and Tetraquark states
• ${\rm Y}(nl)$ decay into $B^{(\ast )}{\bar{B}}^{(\ast )}$
• Heavy hybrid decays to quarkonia
• Diabatic description of bottomoniumlike mesons
• Bottomonium spectrum with a Dirac potential model in the momentum space
• Predictions for Bottomonium from a Relativistic Screened Potential Model
• Radiative decays in bottomonium beyond the long wave length approximation
• Strong decays of the lowest bottomonium hybrid within an extended Born-Oppenheimer framework
• Canonical interpretation of $Y(10750)$ and ${\rm Y}(10860)$ in the ${\rm Y}$ family