1210.7016 (Christopher Monahan et al.)

Matching heavy-light currents with NRQCD and HISQ quarks    [PDF]

Christopher Monahan, Christine Davies, Ron Horgan, G. Peter Lepage, Heechang Na, Junko Shigemitsu

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.

View original: http://arxiv.org/abs/1210.7016