Glueball spectrum and matrix elements on anisotropic lattices

Y. Chen; A. Alexandru; S. J. Dong; T. Draper; I. Horváth; F. X. Lee; K. F. Liu; N. Mathur; C. Morningstar; M. Peardon; S. Tamhankar; B. L. Young; J. B. Zhang

doi:10.1103/PhysRevD.73.014516

Glueball spectrum and matrix elements on anisotropic lattices

Y. Chen, A. Alexandru, S. J. Dong, T. Draper, I. Horváth, F. X. Lee, K. F. Liu, N. Mathur, C. Morningstar, M. Peardon, S. Tamhankar, B. L. Young, J. B. Zhang

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Abstract

The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from 0.1-0.2fm. These matrix elements are needed to predict the glueball branching ratios in J/ψ radiative decays which will help identify the glueball states in experiments. Two types of improved local gluonic operators are constructed for a self-consistent check and the finite-volume effects are studied. We find that lattice spacing dependence of our results is very weak and the continuum limits are reliably extrapolated, as a result of improvement of the lattice gauge action and local operators. We also give updated glueball masses with various quantum numbers.

Original language	English
Article number	014516
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	73
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.73.014516
State	Published - Jan 1 2006

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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Chen, Y., Alexandru, A., Dong, S. J., Draper, T., Horváth, I., Lee, F. X., Liu, K. F., Mathur, N., Morningstar, C., Peardon, M., Tamhankar, S., Young, B. L., & Zhang, J. B. (2006). Glueball spectrum and matrix elements on anisotropic lattices. Physical Review D - Particles, Fields, Gravitation and Cosmology, 73(1), Article 014516. https://doi.org/10.1103/PhysRevD.73.014516

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abstract = "The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from 0.1-0.2fm. These matrix elements are needed to predict the glueball branching ratios in J/ψ radiative decays which will help identify the glueball states in experiments. Two types of improved local gluonic operators are constructed for a self-consistent check and the finite-volume effects are studied. We find that lattice spacing dependence of our results is very weak and the continuum limits are reliably extrapolated, as a result of improvement of the lattice gauge action and local operators. We also give updated glueball masses with various quantum numbers.",

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AU - Alexandru, A.

AU - Dong, S. J.

AU - Draper, T.

AU - Horváth, I.

AU - Lee, F. X.

AU - Liu, K. F.

AU - Mathur, N.

AU - Morningstar, C.

AU - Peardon, M.

AU - Tamhankar, S.

AU - Young, B. L.

AU - Zhang, J. B.

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N2 - The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from 0.1-0.2fm. These matrix elements are needed to predict the glueball branching ratios in J/ψ radiative decays which will help identify the glueball states in experiments. Two types of improved local gluonic operators are constructed for a self-consistent check and the finite-volume effects are studied. We find that lattice spacing dependence of our results is very weak and the continuum limits are reliably extrapolated, as a result of improvement of the lattice gauge action and local operators. We also give updated glueball masses with various quantum numbers.

AB - The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from 0.1-0.2fm. These matrix elements are needed to predict the glueball branching ratios in J/ψ radiative decays which will help identify the glueball states in experiments. Two types of improved local gluonic operators are constructed for a self-consistent check and the finite-volume effects are studied. We find that lattice spacing dependence of our results is very weak and the continuum limits are reliably extrapolated, as a result of improvement of the lattice gauge action and local operators. We also give updated glueball masses with various quantum numbers.

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Glueball spectrum and matrix elements on anisotropic lattices

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