Exotic vector charmonium and its leptonic decay width

Abstract

We propose a novel type of interpolating field operators, which manifests the hybrid-like configuration that the charm quark-antiquark pair recoils against gluonic degrees of freedom. A heavy vector charmonium-like state with a mass of $4.33(2)\mathrm{GeV}$ is disentangled from the conventional charmonium states in the quenched approximation. This state has affinity for the hybrid-like operators but couples less to the relevant quark bilinear operator. We also try to extract its leptonic decay constant and give a tentative upper limit that it is less than one tenth of that of $J/\psi$, which corresponds to a leptonic decay width about dozens of eV. The connection of this state with $X(4260)$ is also discussed.

arXiv comment9 pages, 7 figures, to be submitted to Chinese Physics C

References in corpus (28)

• Big-Bang Nucleosynthesis
• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• The glueball spectrum from an anisotropic lattice study
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Glueball Spectrum and Matrix Elements on Anisotropic Lattices
• Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• Excited and exotic charmonium spectroscopy from lattice QCD
• Hadro-Charmonium
• Efficient glueball simulations on anisotropic lattices
• Charmonium Decays of $Y(4260), psi(4160), and psi(4040)
• Gluonic charmonium resonances at BaBar and Belle?
• The Possible Interpretations of Y(4260)
• Radiative Transitions in Charmonium from Lattice QCD
• Suppressed decay into open charm for the Y(4260) being an hybrid
• Exotic mesons in quenched lattice QCD
• Highly excited and exotic meson spectrum from dynamical lattice QCD
• Quarkonium Hybrids with Nonrelativistic Effective Field Theories
• Exotic and excited-state radiative transitions in charmonium from lattice QCD
• Orbitally excited and hybrid mesons from the lattice
• Scalar Glueball in Radiative $J/\psi$ Decay on Lattice
• Lattice calculation of $1^{-+}$ hybrid mesons with improved Kogut-Susskind fermions
• Calculating the I=2 Pion Scattering Length Using Tadpole Improved Clover Wilson Action on Coarse Anisotropic Lattices
• Exotic mesons from quantum chromodynamics with improved gluon and quark actions on the anisotropic lattice
• Lattice study on ${\eta }_{c2}$ and X(3872)
• Charmonium in lattice QCD and the non-relativistic quark-model
• Is $1^{-}+$ Meson a Hybrid?
• Quenched Charmed Meson Spectra using Tadpole Improved Quark Action on Anisotropic Lattices

Cited by in corpus (17)

• The $XYZ$ states: experimental and theoretical status and perspectives
• Pentaquark and Tetraquark states
• Precise measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ cross section at center-of-mass energies from 3.77 to 4.60 GeV
• Evidence of Two Resonant Structures in $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• The XYZ states revisited
• Production of $Y(4260)$ as a hadronic molecule state of $\bar{D}{D}_1+c.c.$ in $e^{+}{e}^{-}$ annihilations
• Observation of Three Charmoniumlike States with $J^{PC}=1^{--}$ in $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}{\pi }^{+}$
• Charmonium and Charmoniumlike States at the BESIII Experiment
• Resonant parameters of the $Y(4220)$
• Status of quarkonia - like negative and positive parity states in a relativistic confinement scheme
• Cross section line shape of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ around the $Y(4260)$ mass region
• $X(4260)$ Revisited: A Coupled Channel Perspective
• Interpretation of $Y(4390)$ as an isoscalar partner of $Z(4430)$ from $D^{\ast }(2010){\bar{D}}_1(2420)$ interaction
• Observation of $e^{+}{e}^{-}\to \eta h_c$ at center-of-mass energies from 4.085 to 4.600 GeV
• Color halo scenario of charmonium-like hybrids
• Observation of Three Resonant Structures in the Cross Section of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• Measurement of $e^{+}{e}^{-}\to \varphi {\eta }^{\prime }$ cross sections at center-of-mass energies between 3.508 and 4.600 GeV