QCD Hadron Spectroscopy with Staggered Dynamical Quarks at ${\hat{I}}^2=5.6$

Abstract

We present preliminary results from the 1991 HEMCGC simulations with staggered dynamical fermions on a $16^3\times 32$ lattice at ${\hat{I}}^2=5.6$ with sea quark masses $a{m}_q=0.025$ and 0.01. The spectroscopy was done both for staggered valence quarks with mass equal to the sea quark masses and for Wilson valence quarks at six different values for $\hat{I}º$, 0.1320, 0.1410, 0.1525, 0.1565, 0.1585, and 0.1600. In addition to the measurements performed in our earlier work, we also measured the $\hat{I}”$ and other `extended' hadrons for staggered valence quarks and pseudo-scalar decay constants and vector meson matrix elements, the wave function at the origin, for Wilson valence quarks.