Non-perturbative determination of heavy quark action coefficients
نویسندگان
چکیده
منابع مشابه
/ 0 40 90 85 v 1 1 5 Se p 20 04 Non - perturbative determination of heavy quark action coefficients ∗
We propose to determine the coefficients in the Fermilab heavy quark action by matching the finite-volume, off-shell, gauge-fixed propagator and vertex functions with those determined in the exact, relativistic theory. The matching relativistic amplitudes may be determined either from short-distance perturbation theory or from finite-volume step-scaling recursion. Tree-level matching and non-pe...
متن کاملNon - perturbative Heavy Quark Effective Theory
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 nonperturbative 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...
متن کاملPerturbative and Non-perturbative Issues in Heavy Quark Fragmentation A
We review the state-of-the-art of our understanding of heavy quark fragmentation. Recent e + e − data for B mesons are compared to the most up-to-date theoretical predictions, and the need for inclusion of a non-perturbative component is discussed. Experimental analyses in moments space are suggested, and it is pointed out how perturbative and non-perturbative contributions are to be properly m...
متن کاملPhenomenological applications of non-perturbative heavy quark effective theory
We briefly review the strategy to perform non-perturbative heavy quark effective theory computations and we specialize to the case of the b quark mass which has recently been computed including the 1/m term.
متن کاملNon-perturbative Dynamics of the Heavy-Light Quark System
We obtain the non-perturbative interaction kernel of the heavy-light quark system in a gauge-invariant approach. The potential and the sum rules limit are discussed. Some insight is given in the light quark interaction. INTRODUCTION The dynamics of a system composed by two heavy quarks is well understood in terms of a potential interaction (static plus relativistic corrections) obtained from th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2005
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2004.11.306