Measurement of the hybrid content of heavy quarkonia using lattice nonrelativistic QCD

T. Burch, K. Orginos, D. Toussaint

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Abstract

Using lowest-order lattice nonrelativistic QCD to create heavy meson propagators and applying the spin-dependent interaction, cB(- g/2mq)σ̄·B̄, at varying intermediate time slices, we compute the off-diagonal matrix element of the Hamiltonian for the quarkonium-hybrid two-state system. Thus far, we have results for one set of quenched lattices with an interpolation in quark mass to match the bottomonium spectrum. After diagonalization of the two-state Hamiltonian, we find the ground state of the Y to show a 0.0035(1)cB2 (with cB2∼1.5-3.1) probability admixture of hybrid, |bb̄g〉.

Original languageEnglish (US)
Article number074505
Pages (from-to)745051-745055
Number of pages5
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume64
Issue number7
StatePublished - Oct 1 2001

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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