B semileptonic decays with 2+1 dynamical quark flavors

Abstract

We study semileptonic B decays, using MILC dynamical configurations with $N_f=2+1$. NRQCD heavy and AsqTad light quark actions are used. We obtain the semileptonic form factors $f_{+}(q^2)$ and $f_0(q^2)$ in the chiral limit.

6 pages, 3 figures, talk presented at Lattice 2005 (Heavy quark physics)