Application of heavy-quark effective theory to lattice QCD: Power corrections
- Theoretical Physics Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
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 m{sub Q} are comparable. Effects of both short distances a and 1/m{sub Q} are captured fully into coefficient functions, which multiply the operators of the usual HQET. Standard tools of HQET are used to develop heavy-quark expansions of lattice observables and, thus, to propagate heavy-quark discretization errors. Three explicit examples are given: namely, the mass, decay constant, and semileptonic form factors of heavy-light mesons. (c) 2000 The American Physical Society.
- OSTI ID:
- 20216970
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 62, Issue 1; Other Information: PBD: 1 Jul 2000; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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