D. Weingarten

Numerical evidence for the observation of a scalar glueball.

We compute from lattice QCD in the valence (quenched) approximation the partial decay widths of the lightest scalar glueball to pairs of pseudoscalar quark-antiquark states. These predictions and values obtained earlier for the scalar glueball{close_quote}s mass are in good agreement with the observed properties of {ital f}{sub {ital J}}(1710) and inconsistent with all other observed meson resonances. {copyright} {ital 1995 The American Physical Society.}

Scalar quarkonium masses and mixing with the lightest scalar glueball

We evaluate the continuum limit of the valence (quenched) approximation to the mass of the lightest scalar quarkonium state for a range of different quark masses and to the mixing energy between these states and the lightest scalar glueball. Our results support the interpretation of

The scalar and tensor glueballs in the valence approximation

f_0(1710)

Meson decay constants from the valence approximation to lattice QCD

as composed mainly of the lightest scalar glueball.

The Scalar quarkonium spectrum and quarkonium glueball mixing

Abstract We evaluate the infinite volume, continuum limit of 0++ and 2++ glueball masses in the valence approximation. We find m0++ = 1740 ± 71 MeV and m2++ = 2359 ± 128 MeV, consistent with the interpretation of f0(1710) as the lightest scalar glueball.

Continuum limit of scalar masses and mixing energies

We evaluate ƒπmϱ, ƒ Kmρ, 1ƒρ, and mφ(ƒφmρ), extrapolated to physical quark mass, zero lattice spacing and infinite volume, for lattice QCD with Wilson quarks in the valence (quenched) approximation. The predicted ratios differ from experiment by amounts ranging from 12% to 17% equivalent to between 0.9 and 2.8 times the corresponding statistical uncertainties.

Scalar quarkonium masses

Abstract We evaluate the valence approximation to the mass of scalar quarkonium and to the mixing energy between scalar quarkonium and the lightest scalar glueball for a range of different lattice sizes and quark masses. Our results support the identification of f0(1710) as the lightest scalar glueball.

Scalar glueball decay

Abstract We evaluate the continuum limit of the valence approximation to the mass of scalar quarkonium and to the scalar quarkonium-glueball mixing energy for a range of different quark masses. Our results answer several questions raised by the proposed identification of f 0 (1710) as composed primarily of the lightest scalar glueball.

Coupling constants for scalar glueball decay

Abstract We evaluate the valence approximation to the mass of scalar quarkonium for a range of different parameters. Our results strongly suggest that the infinite volume continuum limit of the mass of s s scalar quarkonium lies well below the mass of fJ(1710). The resonance f0(1500) appears to the best candidate for s s scalar quarkonium.

Infinite volume, continuum limit of valence approximation hadron masses☆

We evaluate the coupling constant for the lightest scalar glueball to decay to pseudoscalar meson pairs. The calculation is done in the valence approximation on a 163 × 24 lattice at β = 5.70 for two different values of pseudoscalar meson mass.