Hybrid Quarkonia on Asymmetric Lattices

Abstract

We report on a study of heavy hybrid states using the NRQCD approach on coarse and asymmetric lattices, where we discard vacuum polarisation effects and neglect all spin-correction terms. We find a clear hybrid signal on all our lattices ($a_s=\mathrm{0.15...0.47}$ fm). We have studied in detail the lattice spacing artefacts, finite volume effects and mass dependence. Within the above approximations we predict the hybrid excitation in Charmonium to be 1.323(13) GeV above its ground state. The bottomonium hybrid was found to be 1.542(8) GeV above its ground state.

arXiv comment7 pages, Latex, 3 figures

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Cited by in corpus (43)

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• Charmonium Spectrum from Quenched Anisotropic Lattice QCD
• Heavy Quarks on Anisotropic Lattices: The Charmonium Spectrum
• Determination of Alpha_s(1 GeV) from the charmonium fine structure
• Exotic mesons from quantum chromodynamics with improved gluon and quark actions on the anisotropic lattice
• Dynamical QCD simulations on anisotropic lattices
• Sea Quark Effects on Quarkonia
• O(a)-improved quark action on anisotropic lattices and perturbative renormalization of heavy-light currents
• Relativistic Bottomonium Spectrum from Anisotropic Lattices
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• Estimate of the charmed 0-- hybrid meson spectrum from quenched lattice QCD
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• Two flavors of dynamical quarks on anisotropic lattices
• Hybrid Quarkonia with Dynamical Sea Quarks
• Exotic Quarkonia from Anisotropic Lattices
• Heavy Quarks on the Lattice
• Relativistic Quarkonia from Anisotropic Lattices
• Gauge Theories on a 2+2 Anisotropic Lattice
• Anisotropy tuning with the Wilson flow
• Semileptonic B Decays from an NRQCD/D234 Action
• Measurement of hybrid content of heavy quarkonia using lattice NRQCD
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• Hybrid mesons from lattice QCD
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• Beyond the quark model of hadrons from lattice QCD