Bethe-Salpeter dynamics and the constituent mass concept for heavy quark mesons

Journal Article · Tue Jun 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.114019· OSTI ID:21407965

Souchlas, N ^[1]; Stratakis, D ^[2]

---

1. Department of Physics, Brookhaven National Lab, Upton New York 11973 (United States) and Department of Physics, Kent State University, Kent, Ohio, 44242 (United States)
2. Department of Physics, Brookhaven National Lab, Upton New York, 11973 (United States)

The definition of a quark as heavy requires a comparison of its mass with the nonperturbative chiral symmetry breaking scale which is about 1 GeV ({Lambda}{sub {chi}{approx}1} GeV) or with the scale {Lambda}{sub QCD{approx}}0.2 GeV that characterizes the distinction between perturbative and nonperturbative QCD. For quark masses significantly larger than these scales, nonperturbative dressing effects, or equivalently nonperturbative self-energy contributions, and relativistic effects are believed to be less important for physical observables. We explore the concept of a constituent mass for heavy quarks in the Dyson-Schwinger equations formalism, for light-heavy and heavy-heavy quark mesons by studying their masses and electroweak decay constants.

• OSTI ID: 21407965
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BEAUTY PARTICLES
BETHE-SALPETER EQUATION
BOSONS
C QUARKS
CHARM PARTICLES
CHIRAL SYMMETRY
COMPARATIVE EVALUATIONS
DECAY
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
EQUATIONS
EVALUATION
FERMIONS
FIELD THEORIES
GEV RANGE
GEV RANGE 01-10
HADRONS
MASS
MATHEMATICAL MODELS
MESONS
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RELATIVISTIC RANGE
SELF-ENERGY
SYMMETRY
SYMMETRY BREAKING
T QUARKS
TOP PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEINBERG-SALAM GAUGE MODEL