Scalar Glueball--Quarkonium Mixing and the Structure of the QCD Vacuum

Details Scalar Glueball--Quarkonium Mixing and the Structure of the QCD Vacuum Scalar Glueball--Quarkonium Mixing and the Structure of the QCD Vacuum

1999-09-10

arxiv.org/abs/hep-ph/9909322v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, LaTeX

Scientific paper

We use Ward identities of broken scale invariance to infer the amount of scalar glueball--$\bar{q}q$ meson mixing from the ratio of quark and gluon condensates in the QCD vacuum. Assuming dominance by a single scalar state, as suggested by a phase-shift analysis, we find a mixing angle $\gamma \sim 36^{\circ}$, corresponding to near-maximal mixing of the glueball and $\bar{s}s$ components.

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