Problems of describing spin-(3/2 baryon resonances in the effective Lagrangian theory

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.39.2339· OSTI ID:6139900

Benmerrouche, M; Davidson, R M; Mukhopadhyay, N C

We investigate some important theoretical issues associated with the treatment of the spin-3/2 baryons in the effective Lagrangian theory. These are the form of the spin-3/2 particle propagator, off-shell parameters involving the spin-3/2 field; strategies of implementing gauge invariance, and unitarity. We comment on previous works by Peccei, Nath /ital et/ /ital al/., Williams, and Adelseck /ital et/ /ital al/., the last three works being in the context of recent revival of interest of baryon resonance structure in quantum chromodynamics. Our experience on the ..delta..(1232) resonance is invoked as a concrete example of dealing with these problems. Examples of some related problems in theories of massive vector and spin-3/2 particles, in pion decay and supersymmetry, respectively, are also discussed. These discussions should trigger new theoretical and experimental investigations in the study of baryon resonances excited from free hadrons and in complex nuclei.

• Research Organization: Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180-3590(US); Institute of Nuclear and Particle Physics, University of Virgina, Charlottesville, Virginia 22901
• OSTI ID: 6139900
• Journal Information: Phys. Rev. C; (United States), Vol. 39:6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DELTA-1232 BARYONS
LAGRANGIAN FIELD THEORY
B MESONS
BARYONS
COUPLING
DECAY
GAUGE INVARIANCE
LORENTZ INVARIANCE
PIONS
PROPAGATOR
QUANTUM CHROMODYNAMICS
RELATIVITY THEORY
SPIN
SUPERSYMMETRY
UNITARITY
WAVE EQUATIONS
ANGULAR MOMENTUM
BOSONS
DELTA BARYONS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD THEORIES
GENERAL RELATIVITY THEORY
HADRONS
INVARIANCE PRINCIPLES
MESONS
N BARYONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
SYMMETRY
645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties