The residual mass in Lattice Heavy Quark Effective Theory to alpha^3 order

Details The residual mass in Lattice Heavy Quark Effective Theory to alpha^3 order The residual mass in Lattice Heavy Quark Effective Theory to alpha^3 order

2000-12-08

arxiv.org/abs/hep-lat/0012011v2

JHEP 0102:020,2001

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 1 figure. Axes labels added to the figure. Two references added. Section 3.2 a bit enriched to clarify the message.

Scientific paper

10.1088/1126-6708/2001/02/020

We determine to order alpha^3 in the quenched approximation the so-called residual mass in the lattice regularisation of the Heavy Quark Effective Theory. We follow a gauge-invariant strategy which exploits the fact that this mass term dominates the exponential decrease of perturbative Wilson loops at large perimeters. Our computational tool is Numerical Stochastic Perturbation Theory. The new coefficient we compute is crucial to improve the determination of the (MS bar) mass of the b-quark from lattice simulations of the Heavy Quark Effective Theory.

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