A High Statistics Study of Flavour-Singlet Mesons with Staggered   Fermions
  We present some early results from a high statistics study of the scalar and pseudoscalar singlet sectors of lattice QCD using 2+1 flavours of Asqtad improved staggered fermions. The use of the Asqtad action has allowed us to generate an unprecedented number of configurations at 2 lattice spacings which on completion we hope will give us a significantly improved view of both the scalar and pseudoscalar singlet sectors. 
E. B. Gregory, A. C. Irving, C. McNeile, C. M. Richards (for the UKQCD   Collaboration)