Matching of heavy-light flavour currents between HQET at order 1/m and QCD: I. Strategy and tree-level study
Abstract
We present a strategy how to match the full set of components of the heavy-light axial and vector currents in Heavy Quark Effective Theory (HQET), up to and including 1/m-corrections, to QCD. While the ultimate goal is to apply these matching conditions non-perturbatively, in this study we first have implemented them at tree-level, in order to find good choices of the matching observables with small O(1/m^2) contributions. They can later be employed in the non-perturbative matching procedure which is a crucial part of precision HQET computations of semileptonic decay form factors in lattice QCD.
Keywords
Cite
@article{arxiv.1312.1566,
title = {Matching of heavy-light flavour currents between HQET at order 1/m and QCD: I. Strategy and tree-level study},
author = {Michele Della Morte and Samantha Dooling and Jochen Heitger and Dirk Hesse and Hubert Simma},
journal= {arXiv preprint arXiv:1312.1566},
year = {2014}
}
Comments
32 pages, 7 figures, 2 appendices. Matches version to be published in JHEP. One equation and one figure corrected, a few typos fixed. Results unchanged