Y(4260) on the lattice

Abstract

We investigate the mass spectra of closed-charm mesons with $J^{PC}=1^{--}$, for hybrid charmonium, molecules, and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For two lattice volumes $24^3\times 48$ and $20^3\times 40$, each of 100 gauge configurations generated with single-plaquette action at $\beta =6.1$, we compute point-to-point quark propagators and measure the time-correlation functions of these exotic meson operators. For the molecular operator $ \{(\qbarγ_5γ_i\c)(\cbarγ_5\q)- (\cbarγ_5γ_i\q)(\qbarγ_5\c) \} $, it detects a resonance with mass around $4238\pm 31$ MeV, which is naturally identified with $Y(4260)$. Further, for any molecular and diquark-antidiquark operator, it detects heavier exotic charmed mesons, with quark content $ (\c\s\cbar\sbar) $ around $4450\pm 100$ MeV, and $ (\c\c\cbar\cbar) $ around $6400\pm 50$ MeV.

17 pages, 13 EPS figures, v3:reference added, accepted for publication in Physical Review D

Cited by in corpus (43)

• The hidden-charm pentaquark and tetraquark states
• Pentaquark and Tetraquark states
• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• Evidence of Two Resonant Structures in $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays
• A non-relativistic model for the $[cc][\bar{c}\bar{c}]$ tetraquark
• Heavy-flavored tetraquark states with the $QQ\bar{Q}\bar{Q}$ configuration
• ${\Lambda }_{c}N$ bound states revisited
• A review of two-band superconductivity: materials and effects on the thermodynamic and reversible mixed-state properties
• New Hadron States
• X(3872) and Y(4140) using diquark-antidiquark operators with lattice QCD
• Scalar Mesons a0(1450) and sigma(600) from Lattice QCD
• Lattice study of light scalar tetraquarks with I=0,2,1/2,3/2: are sigma and kappa tetraquarks?
• Charmonium spectroscopy and mixing with light quark and open charm states from nF=2 lattice QCD
• Observation of the $Y(4230)$ and a new structure in $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$
• Fully-heavy tetraquark spectroscopy in the relativistic quark model
• Determining the upper limit of Gamma_{ee} for the Y(4260)
• X(3872) in lattice QCD with exact chiral symmetry
• Searching for the Bottom Counterparts of X(3872) and Y(4260) via ${\pi }^{+}{\pi }^{-}{\rm Y}$
• A lattice study of light scalar tetraquarks
• 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)
• Fully heavy pentaquarks
• Higher Hybrid Charmonia in an Extended Potential Model
• Observation of Three Charmoniumlike States with $J^{PC}=1^{--}$ in $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}{\pi }^{+}$
• $D\bar{D}$ production and their interactions
• X(1812) in Quarkonia-Glueball-Hybrid Mixing Scheme
• Prediction of an exotic state around 4240 MeV with $J^{PC}=1^{-+}$ as C-parity partner of Y(4260) in molecular picture
• Going in quest of potential tetraquark interpretations for the newly observed $T_{\psi \psi }$ states in light of the diquark-antidiquark scenarios
• Cross section line shape of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ around the $Y(4260)$ mass region
• 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
• Pseudovector meson with strangeness and closed-charm
• Observation of $e^{+}{e}^{-}\to \eta h_c$ at center-of-mass energies from 4.085 to 4.600 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 $p\bar{p}$
• 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 $4.60\mathrm{GeV}$
• Colloquium: Hadron Production in Open-charm Meson Pair at $e^{+}{e}^{-}$ Collider
• Mass spectrum of $1^{--}$ heavy quarkonium
• Is the Y(4260) just a coupled-channel signal?
• Models and Potentials in Hadron Spectroscopy
• Decay Properties of Conventional and Hybrid Charmonium Mesons
• f(2010) in Lattice QCD
• Search for $e^{+}{e}^{-}\to \varphi {\chi }_{c0}$ and $\varphi {\eta }_{c2}(1D)$ at center-of-mass energies from 4.47 to 4.95 GeV