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

被引：7

作者：

Della Morte, Michele ^{[1
]}

Dooling, Samantha ^{[2
]}

Heitger, Jochen ^{[2
]}

Hesse, Dirk ^{[3
]}

Simma, Hubert ^{[4
]}

机构：

[1] Inst Fis Corpuscular IFIC CSIC, E-46980 Paterna, Spain

[2] Univ Munster, Inst Theoret Phys, D-48149 Munster, Germany

[3] Univ Parma, I-43124 Parma, Italy

[4] DESY, NIC, D-15738 Zeuthen, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 05期

关键词：

Lattice Gauge Field Theories; B-Physics; Heavy Quark Physics; ONE-LOOP ORDER; LATTICE QCD; RENORMALIZATION; IMPROVEMENT;

D O I：

10.1007/JHEP05(2014)060

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 (h) -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 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.

引用

页数：31

共 31 条

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Blossier, Benoit
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