Isf0(1500) a scalar glueball?

Following the discovery of two new scalar mesons ${\mathit{f}}_0$(1370) and ${\mathit{f}}_0$(1500) at the Low Energy Antiproton Ring at CERN, we argue that the observed properties of this pair are incompatible with them both being QQ¯ mesons. We show instead that ${\mathit{f}}_0$(1500) is compatible with the ground state glueball expected around 1500 MeV mixed with the nearby states of the $0^{++}$QQ¯ nonet. Tests of this hypothesis include the prediction of a further scalar state ${\mathit{f}}_0^{\prime }$(1500–1800) which couples strongly to KK¯, ηη, and ηη′. Signatures for a possible tensor glueball at ∼2 GeV are also considered. © 1995 The American Physical Society.