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arXiv · 1312.1566

Matching of heavy-light flavour currents between HQET at order 1/m and QCD: I. Strategy and tree-level study

Michele Della Morte·Samantha Dooling·Jochen Heitger·Dirk Hesse·Hubert Simma
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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.

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Michele Della Morte, Samantha Dooling, Jochen Heitger, Dirk Hesse, Hubert Simma. 2014-04-25. Matching of heavy-light flavour currents between HQET at order 1/m and QCD: I. Strategy and tree-level study. https://arxiv.org/abs/1312.1566

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