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- W1969474809 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 ${24}^{3}ifmmodetimeselsetexttimesfi{}48$ and ${20}^{3}ifmmodetimeselsetexttimesfi{}40$, each of 100 gauge configurations generated with single-plaquette action at $ensuremath{beta}=6.1$, we compute point-to-point quark propagators and measure the time-correlation functions of these exotic meson operators. For the molecular operator ${(overline{mathbf{q}}{ensuremath{gamma}}_{5}{ensuremath{gamma}}_{i}mathbf{c})(overline{mathbf{c}}{ensuremath{gamma}}_{5}mathbf{q})ensuremath{-}(overline{mathbf{c}}{ensuremath{gamma}}_{5}{ensuremath{gamma}}_{i}mathbf{q})(overline{mathbf{q}}{ensuremath{gamma}}_{5}mathbf{c})}$, it detects a resonance with mass around $4238ifmmodepmelsetextpmfi{}31text{ }text{ }mathrm{MeV}$, which is naturally identified with $Y(4260)$. Further, for any molecular and diquark-antidiquark operator, it detects heavier exotic charmed mesons, with $(mathbf{c}mathbf{s}overline{mathbf{c}}overline{mathbf{s}})$ around $4450ifmmodepmelsetextpmfi{}100text{ }text{ }mathrm{MeV}$, and $(mathbf{c}mathbf{c}overline{mathbf{c}}overline{mathbf{c}})$ around $6400ifmmodepmelsetextpmfi{}50text{ }text{ }mathrm{MeV}$." @default.
- W1969474809 created "2016-06-24" @default.
- W1969474809 creator A5068073154 @default.
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- W1969474809 date "2006-05-25" @default.
- W1969474809 modified "2023-10-16" @default.
- W1969474809 title "<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>Y</mml:mi><mml:mo stretchy=false>(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:math>on the lattice" @default.
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- W1969474809 doi "https://doi.org/10.1103/physrevd.73.094510" @default.
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