Erratum: Application of heavy-quark effective theory to lattice QCD. II. Radiative corrections to heavy-light currents [Phys. Rev. D65, 094513 (2002)]
نویسندگان
چکیده
منابع مشابه
Heavy Quark Effective Field Theory at O(1/mQ). II. QCD Corrections to the Currents
We present a calculation of the renormalized heavy-light and heavyheavy currents in HQET at order O(1/mQ).
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Heavy-quark effective theory (HQET) is applied to lattice QCD with Wilson fermions at fixed lattice spacing a. This description is possible because heavy-quark symmetries are respected. It is desirable because the ultraviolet cutoff 1/a in current numerical work and the heavy-quark mass mQ are comparable. Effects of both short distances a and 1/mQ are captured fully into coefficient functions, ...
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We perform the first study for the heavy-heavy-light quark (QQq) potential in SU(3) quenched lattice QCD with the Coulomb gauge. The calculations are done with the standard gauge and O(a)-improved Wilson fermion action on the 16 lattice at β = 6.0. We calculate the energy of QQq systems as the function of the distance R between the two heavy quarks, and find that the QQq potential is well descr...
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We show that the different ways of deriving the Heavy Quark Effective Theory (HQET) lead to equivalent theories. The equivalence can be established through a careful redefinition of the field variables. We demonstrate the equivalence to order 1 m in the presence of a constant electric field.
متن کاملImproved Heavy Quark Effective Theory Currents
It is hoped that the accuracy of a variety of lattice calculations will be improved by perturbatively eliminating effects proportional to the lattice spacing. In this paper, we apply this improvement program to the heavy quark effective theory currents which cause a heavy quark to decay to a light quark, and renormalize the resulting operators to order αS. We find a small decrease in the amount...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2005
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.71.019903