Low energy constants from the MILC Collaboration
  Based on ongoing simulations, we update our results for low energy constants, decay constants, and light quark masses. The simulations employ three dynamical flavors of improved staggered quarks. 
C. Bernard, C. DeTar, Steven Gottlieb, U.M. Heller, J.E. Hetrick, L.   Levkova J. Osborn, D. Renner, R. Sugar, D. Toussaint