Published July 1, 1990
| Version v1
Journal article
Model-independent determination of K-matrix poles and residues in the Δ(1232) region from the multipole data for pion photoproduction
- 1. Institut fuer Theoretische Physik III, Universitaet Erlangen-Nuernberg, D-8520 Erlangen (Federal Republic of Germany)
- 2. Department of Physics, Rensselaer Polytechnic Institute, Troy, NY (USA)
- 3. Theory Group, Paul Scherrer Institute, CH-5234 Villigen (Switzerland)
- 4. Institute of Nuclear and Particle Physics, Jesse W. Beams Laboratory, University of Virginia, Charlottesville, VA (USA)
Description
Using only the analytic structure of the K matrix and the assumption that the Compton-scattering amplitude is small compared to strong and electrostrong amplitudes, we extract the pole position and the residues for the resonant multipoles, in a model-independent and background-free fashion, directly from the experimentally obtained multipole data base in the Δ(1232) region, posing a challenge for QCD-inspired hadron models
Additional details
Publishing Information
- Journal Title
- Physical Review, D
- Journal Volume
- 42
- Journal Issue
- 1
- Series
- Phys. Rev., D.
- Journal Page Range
- 20-29
- ISSN
- 0556-2821
- CODEN
- PRVDA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21085472
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- COMPTON EFFECT; DELTA-1232 BARYONS; K MATRIX; PHASE SHIFT; PHOTON-HADRON INTERACTIONS; PHOTOPRODUCTION; PIONS; QUANTUM CHROMODYNAMICS; S MATRIX; SCATTERING AMPLITUDES
- Descriptors DEC
- AMPLITUDES; BARYONS; BASIC INTERACTIONS; BOSONS; DELTA BARYONS; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; INTERACTIONS; MATRICES; MESONS; N*BARYONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SCATTERING