Color-hyperfine splitting in heavy-quarkonium P states from perturbative QCD with a running coupling strength

Journal Article · Tue Sep 01 04:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.2150· OSTI ID:7258550

Lichtenberg, D B; Potting, R ^[1]

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1. Physics Department, Indiana University, Bloomington, Indiana 47405 (United States)

We obtain an expression for the color-hyperfine interaction in heavy quarkonium in perturbative QCD including terms up to one loop, but going beyond one loop by letting the strong-interaction coupling constant {alpha}{sub {ital s}} run. The resulting expression cannot be written analytically in position space, but we make approximations which enable us to obtain approximate upper and lower bounds on the {ital P}-wave color-hyperfine splittings in charmonium and bottomonium.

• OSTI ID: 7258550
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662230* -- Quantum Chromodynamics-- (1992-)
662240 -- Models for Strong Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
BOTTOMONIUM
CHARMONIUM
COLOR MODEL
COMPOSITE MODELS
COUPLING
COUPLING CONSTANTS
ELEMENTARY PARTICLES
ENERGY LEVELS
FIELD THEORIES
GLUONS
HADRONS
HYPERFINE STRUCTURE
INTERACTIONS
INTERMEDIATE COUPLING
L-S COUPLING
MATHEMATICAL MODELS
MESONS
P STATES
PARTICLE MODELS
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKONIUM
STRONG INTERACTIONS