Non-perturbative heavy quark effective theory

被引：0
|
作者：
Heitger, J
Sommer, R
机构：
[1] Univ Munster, Inst Theoret Phys, D-48149 Munster, Germany
[2] DESY, D-15738 Zeuthen, Germany
[3] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2004年 / 02期
关键词：
quark masses and SM parameters; B-physics; heavy quarks physics; lattice QCD;
D O I：
暂无
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 explain how to perform non-perturbative computations in HQET on the lattice. In particular the problem of the subtraction of power-law divergences is solved by a non-perturbative matching of HQET and QCD. As examples, we present a full calculation of the mass of the b-quark in the combined static and quenched approximation and outline an alternative way to obtain the B-meson decay constant at lowest order. Since no excessively large lattices are required, our strategy can also be applied including dynamical fermions.
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页数：31
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