Speaker: Keh-Fei Liu (University of Kentucky)

Title:
   Pattern of Light Scalar Mesons and Quark/Glue Content in the Nucleon 

Abstract:
   I will report the progress of $\chiQCD$ collaboration on several projects.
Combining lattice calculation of $a_0(1450)$ and $\sigma(600)$ and
the mixing of isoscalar mesons through their decays, we find that 
a simple pattern for the light scalar mesons begins to emerge. Using the
gauge field tensor defined from the overlap operator, we are calculating
the glueball masses, glue and sea quark momentum and angular momentum fractions
in the nucleon.