Calculation of the [Delta][sup +][ital p][gamma] photon-decay amplitude [ital A][sub 1/2] and the [ital E][sub 1][sup +]/[ital M][sub 1][sup +] ratio in single-pion electroproduction: An algebraic approach
Journal Article
·
· Physical Review, D (Particles Fields); (United States)
- Department of Physics, University of New Orleans, New Orleans, Louisiana 70148 (United States)
- Center for Theoretical Physics, University of Maryland, College Park, Maryland 20742 (United States)
A [ital nonperturbative] calculation of the [Delta][sup +][r arrow][ital P]+[gamma] transverse one-half helicity transition form factor [ital h][sub 3]([ital q][sup 2]) and the [ital A][sub 1/2] [Delta][sup +][ital P][gamma] 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 [ital G][sub [ital M]][sup *](0) and the [Delta][sup +] mass. We confirm that [ital G][sub [ital M]][sup *]([ital q][sup 2]) decreases more rapidly than the nucleon dipole form factor in the region where [ital G][sub [ital E]][sup *]([ital q][sup 2]) is known to be small. Our treatment is completely relativistic and current conservation is guaranteed.
- OSTI ID:
- 5287413
- Journal Information:
- Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 49:1; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Resonant [ital P][sub 33] [ital S][sub 1+][sup (3/2)]([ital q][sup 2]) electroproduction multipole amplitude and the [Delta][ital N][gamma] scalar form factor [ital G][sub [ital C]][sup *]([ital q][sup 2])
Soft contribution to form factors of the {gamma}{sup {asterisk}}{ital p}{r_arrow}{Delta}{sup +} transition
Quadrupole amplitude in the [gamma][ital N][leftrightarrow][Delta] transition
Journal Article
·
Wed Jun 01 00:00:00 EDT 1994
· Physical Review, C (Nuclear Physics); (United States)
·
OSTI ID:7116896
Soft contribution to form factors of the {gamma}{sup {asterisk}}{ital p}{r_arrow}{Delta}{sup +} transition
Journal Article
·
Sat Jun 01 00:00:00 EDT 1996
· Physical Review, D
·
OSTI ID:284589
Quadrupole amplitude in the [gamma][ital N][leftrightarrow][Delta] transition
Journal Article
·
Sun Feb 28 23:00:00 EST 1993
· Physical Review, C (Nuclear Physics); (United States)
·
OSTI ID:6709980
Related Subjects
662330 -- Photon & Charged-Lepton Interactions with Hadrons-- (1992)
662390* -- Electromagnetic Processes & Properties-- (1992-)
662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BARYONS
BASIC INTERACTIONS
BOSONS
DECAY
DECAY AMPLITUDES
DELTA BARYONS
E2-TRANSITIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
FERMIONS
FIELD THEORIES
FORM FACTORS
GAMMA DECAY
HADRONS
INTERACTIONS
M1-TRANSITIONS
MESONS
MULTIPOLE TRANSITIONS
N BARYONS
NUCLEAR DECAY
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
TRANSITION AMPLITUDES
662390* -- Electromagnetic Processes & Properties-- (1992-)
662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BARYONS
BASIC INTERACTIONS
BOSONS
DECAY
DECAY AMPLITUDES
DELTA BARYONS
E2-TRANSITIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
FERMIONS
FIELD THEORIES
FORM FACTORS
GAMMA DECAY
HADRONS
INTERACTIONS
M1-TRANSITIONS
MESONS
MULTIPOLE TRANSITIONS
N BARYONS
NUCLEAR DECAY
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
TRANSITION AMPLITUDES