Published January 1, 1994
| Version v1
Journal article
Calculation of the Δ+pγ photon-decay amplitude A1/2 and the E1+/M1+ ratio in single-pion electroproduction: An algebraic approach
Creators
- 1. Department of Physics, University of New Orleans, New Orleans, Louisiana 70148 (United States)
- 2. Center for Theoretical Physics, University of Maryland, College Park, Maryland 20742 (United States)
Description
A nonperturbative calculation of the Δ+→P+γ transverse one-half helicity transition form factor h3(q2) and the A1/2 Δ+Pγ photon-decay amplitude is made with results in good agreement with experiment. The ratio of the electric quadrupole amplitude to the magnetic dipole amplitude at resonance is calculated as a function of GM*(0) and the Δ+ mass. We confirm that GM*(q2) decreases more rapidly than the nucleon dipole form factor in the region where GE*(q2) is known to be small. Our treatment is completely relativistic and current conservation is guaranteed
Additional details
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 49
- Journal Issue
- 1
- Journal Page Range
- p. 323-327.
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25041639
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- DECAY AMPLITUDES; DELTA BARYONS; ELECTROPRODUCTION; E2-TRANSITIONS; FORM FACTORS; GAMMA DECAY; M1-TRANSITIONS; NUCLEONS; PIONS; QUANTUM CHROMODYNAMICS; TRANSITION AMPLITUDES
- Descriptors DEC
- AMPLITUDES; BARYONS; BASIC INTERACTIONS; BOSONS; DECAY; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY-LEVEL TRANSITIONS; FERMIONS; FIELD THEORIES; HADRONS; INTERACTIONS; MESONS; MULTIPOLE TRANSITIONS; N*BARYONS; NUCLEAR DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY