Parameters of heavy quark effective theory from Nf = 2 lattice QCD

被引：0

作者：

Benoît Blossier

Michele Della Morte

Patrick Fritzsch

Nicolas Garron

Jochen Heitger

Hubert Simma

Rainer Sommer

Nazario Tantalo

机构：

[1] LPT,Institut für Physik

[2] CNRS et Université Paris-Sud XI,School of Physics and Astronomy

[3] Universität Mainz,Dip. di Fisica

[4] Institut für Kernphysik,undefined

[5] Humboldt Universität zu Berlin,undefined

[6] University of Edinburgh,undefined

[7] Universität Münster,undefined

[8] Institut für Theoretische Physik,undefined

[9] NIC,undefined

[10] DESY,undefined

[11] Università di Roma ‘Tor Vergata’,undefined

[12] INFN,undefined

[13] Sez. di Roma ‘Tor Vergata’,undefined

来源：

Journal of High Energy Physics | / 2012卷

关键词：

Lattice QCD; B-Physics; Nonperturbative Effects; Heavy Quark Physics;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We report on a non-perturbative determination of the parameters of the lattice Heavy Quark Effective Theory (HQET) Lagrangian and of the time component of the heavy-light axial-vector current with Nf = 2 flavors of massless dynamical quarks. The effective theory is considered at the 1/mh order, and the heavy mass mh covers a range from slightly above the charm to beyond the beauty region. These HQET parameters are needed to compute, for example, the b-quark mass, the heavy-light spectrum and decay constants in the static approximation and to order 1/mh in HQET. The determination of the parameters is done non-perturbatively. The computation reported in this paper uses the plaquette gauge action and two different static actions for the heavy quark described by HQET. For the light-quark action we choose non-perturbatively O(a)-improved Wilson fermions.[graphic not available: see fulltext]

引用

共 74 条

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