Is $f_0(1500)$ a Scalar Glueball?

Details Is $f_0(1500)$ a Scalar Glueball? Is $f_0(1500)$ a Scalar Glueball?

1995-07-18

arxiv.org/abs/hep-ph/9507326v1

Phys.Rev.D53:295-311,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 figures; PS files or hard copy available from C Amsler

Scientific paper

10.1103/PhysRevD.53.295

Following the discovery of two new scalar mesons, $f_0(1370)$ and $f_0(1500)$ at the Low Energy Antiproton Ring at CERN, we argue that the observed properties of this pair are incompatible with them both being $\qqbar$ mesons. We show instead that $f_0(1500)$ is compatible with the ground state glueball expected around 1500 MeV mixed with the nearby states of the $0^{++}$ $Q\bar{Q}$ nonet. Tests of this hypothesis include the prediction of a further scalar state, $f_0'(1500 - 1800)$ which couples strongly to $K\bar{K}$, $\eta\eta$ and $\eta\eta'$. Signatures for a possible tensor glueball at $\sim $2 GeV are also considered.

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