Relativistic description of quark-antiquark bound states. Spin-independent treatment

Journal Article · Tue Aug 01 04:00:00 EDT 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.40.843· OSTI ID:5889209

Gara, A; Durand, B; Durand, L; Nickisch, L J

We present the results of a detailed study of light- and heavy-quark--antiquark bound states in the context of the reduced Bethe-Salpeter equation with static vector and scalar interactions. In the present paper, we consider the spin-averaged spectra. Spin effects are considered in a separate paper. We find that this approach, although apparently successful for the heavy-quark /bar bb/ and /bar cc/ states, fails for the /bar ss/, /bar ll/, and light-heavy states. The reasons for the failure are intrinsic to the method, as we discuss. Difficulties are already evident for the /bar cc/ states.

• Research Organization: Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (US); Mission Research Corporation, Monterey, California 93940
• OSTI ID: 5889209
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 40:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BETHE-SALPETER EQUATION
BOUND STATE
DIFFERENTIAL EQUATIONS
EIGENVALUES
ELECTRODYNAMICS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD THEORIES
FUNCTIONS
GENERAL RELATIVITY THEORY
MASS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
QUARKS
REGGE TRAJECTORIES
RELATIVITY THEORY
SPIN
WAVE EQUATIONS
WAVE FUNCTIONS