Matching heavy-light currents with NRQCD and HISQ quarks

Understand

We calculate the one loop renormalisation parameters for the heavy-light axial-vector and vector currents using lattice perturbation theory.

• We use NonRelativistic QCD (NRQCD) heavy quarks and the Highly Improved Staggered Quark (HISQ) action for the light quarks.
• We present results for heavy-light currents with massless HISQ quarks and briefly discuss the extension to heavy-heavy currents with massive HISQ quarks.