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 (Formula presented) as composed mainly of the lightest scalar glueball. © 1999 The American Physical Society.