Published August 1, 2011 | Version v1
Journal article Metadata-only

Covariant model for the γN→N(1535) transition at high momentum transfer

Creators

  • 1. CFTP, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa (Portugal)
  • 2. Dep. Fisica, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa (Portugal)

Description

A relativistic constituent quark model is applied to the γN→N(1535) transition. The N(1535) wave function is determined by extending the covariant spectator quark model, previously developed for the nucleon, to the S11 resonance. The model allows us to calculate the valence quark contributions to the γN→N(1535) transition form factors. Because of the nucleon and N(1535) structure the model is valid only for Q2>2.3 GeV2. The results are compared with the experimental data for the electromagnetic form factors F1* and F2* and the helicity amplitudes A1/2 and S1/2, at high Q2.

Additional details

Identifiers

DOI
10.1103/PhysRevD.84.033007;
arXiv
arXiv:1105.2223v2;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
84
Journal Issue
3
Journal Page Range
p. 033007-033007.17
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43079613
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ELECTROMAGNETIC FORM FACTORS; MOMENTUM TRANSFER; N-1535 BARYONS; NUCLEONS; PHOTON-NUCLEON INTERACTIONS; QUARK MODEL; QUARKS; RELATIVISTIC RANGE; RESONANCE; WAVE FUNCTIONS
Descriptors DEC
BARYONS; BASIC INTERACTIONS; COMPOSITE MODELS; DIMENSIONLESS NUMBERS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FORM FACTORS; FUNCTIONS; HADRONS; INTERACTIONS; MATHEMATICAL MODELS; N BARYONS; N*BARYONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS

Optional Information

Notes
(c) 2011 American Institute of Physics