Heavy-quark renormalization parameters in nonrelativistic QCD

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.915· OSTI ID:7235233

Davies, C T.H.; Thacker, B A ^[1]

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1. Department of Physics, The Ohio State University, 174 W. 18th Ave., Columbus, Ohio 43210 (United States)

We calculate the self-energy of the heavy quark to {ital scrO}({alpha}{sub {ital s}}) in nonrelativistic QCD (NRQCD) on the lattice. We use the lowest-order (in 1/{ital M}) NRQCD action which includes the time derivative and kinetic energy terms, but we ignore spin effects. Results are given for the wave-function renormalization, mass renormalization, and energy shift. Our results agree with the lowest-order static effective field theory as {ital Ma}{r arrow}{infinity}, where {ital Ma} is the quark mass in lattice units. At values of {ital Ma} appropriate to {ital b}- and {ital c}-quark calculations, the differences are significant. We also consider 1/{ital Ma} corrections to the static theory arising from the kinetic term.

• OSTI ID: 7235233
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:3; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110 -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
662230* -- Quantum Chromodynamics-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEAUTY PARTICLES
BOUND STATE
CHARM PARTICLES
COUPLING CONSTANTS
ELEMENTARY PARTICLES
ENERGY
FERMIONS
FIELD THEORIES
FUNCTIONS
KINETIC ENERGY
LATTICE FIELD THEORY
MASS RENORMALIZATION
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RENORMALIZATION
SELF-ENERGY
WAVE FUNCTIONS