Hybrid Quarkonia with Dynamical Sea Quarks

Abstract

We present a dynamical lattice calculation with 2 flavours for bottomonium states with an additional gluonic excitation. Using improved actions for the quarks and gauge fields at a lattice spacing of $a\approx 0.1$ fm, we find 10.977(61)(62) GeV for the energy of the lowest lying $b\bar{b}g$-hybrid, where the first error is statistical and the second denotes the systematic uncertainty due to the determination of scale. In a parallel quenched simulation we demonstrate explicitly that vacuum polarisation effects are less than 10% of the splitting with the ground state.

arXiv comment4 pages, 2 figures, minor corrections and added references

References in corpus (14)

• On the Viability of Lattice Perturbation Theory
• Improved Nonrelativistic QCD for Heavy Quark Physics
• Efficient glueball simulations on anisotropic lattices
• Static potentials and glueball masses from QCD simulations with Wilson sea quarks
• Ab Initio Study of Hybrid b-bar-gb Mesons
• Hybrid and Conventional Mesons in the Flux Tube Model: Numerical Studies and their Phenomenological Implications
• Hybrid Quarkonia on Asymmetric Lattices
• Hybrid and Orbitally Excited Mesons in Full QCD
• Dynamical Quark Effects on Light Quark Masses
• Sea Quark Effects on Quarkonia
• Spin Effects in Heavy Hybrid Mesons on an Anisotropic Lattice
• Improved Upsilon Spectrum with Dynamical Wilson Fermions
• Exotic Quarkonia from Anisotropic Lattices
• Quarkonium Physics and ${\alpha }_{strong}$ from Quarkonia

Cited by in corpus (11)

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• Charmonium Spectrum from Quenched Anisotropic Lattice QCD
• Exotic mesons from quantum chromodynamics with improved gluon and quark actions on the anisotropic lattice
• Estimate of the charmed 0-- hybrid meson spectrum from quenched lattice QCD
• Hybrid mesons and auxiliary fields
• Lattice calculations of hadron properties
• Towers of hybrid mesons
• Heavy Quarks on the Lattice
• Why quarkonium hybrid coupling to two S-wave heavy-light mesons is not suppressed
• Heavy Hadron Spectroscopy