B semileptonic decays with 2+1 dynamical quark flavors

TL;DR

This paper investigates semileptonic B meson decays using lattice QCD with 2+1 dynamical quark flavors, focusing on calculating form factors relevant for understanding weak decay processes.

Contribution

It provides new lattice QCD calculations of semileptonic B decay form factors using MILC configurations with 2+1 flavors, employing NRQCD and AsqTad actions.

Findings

Calculated form factors $f_+(q^2)$ and $f_0(q^2)$ in the chiral limit.

Demonstrated the feasibility of using MILC configurations for B decay studies.

Contributed to precision tests of the Standard Model via B decay form factors.

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.