Scalar meson and glueball decays within a effective chiral approach
  We study the strong and electromagnetic decay properties of scalar mesons above 1 GeV within a chiral approach. The scalar-isoscalar states are treated as mixed states of quarkonia and glueball configurations. A fit to the experimental decay rates listed by the Particle Data group is performed to extract phenomenological constraints on the nature of the scalar resonances. A comparison to other theoretical approaches in the scalar meson sector is discussed. 
F. Giacosa, Th. Gutsche, V.E. Lyubovitskij and Amand Faessler