Published September 2000
| Version v1
Journal article
Photoproduction of η and η' mesons off nucleons close to threshold
Description
The importance of Born terms and resonance exchange for η and η' photoproduction off both the proton and neutron within U(3) baryon chiral perturbation theory is investigated. Low-lying resonances such as the vector mesons and JP=1/2+,1/2- baryon resonances are included explicitly and their contributions together with the Born terms are calculated. The coupling constants of the resonances are determined from strong and radiative decays. We obtain reasonable agreement with experimental data near threshold. (orig.)
Additional details
Publishing Information
- Journal Title
- European Physical Journal. A
- Journal Volume
- 9
- Journal Issue
- 1
- Journal Page Range
- p. 95-107
- ISSN
- 1434-6001
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 32000517
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BORN APPROXIMATION; CHIRALITY; ETA MESONS; ETA PRIME-958 MESONS; EXCITATION FUNCTIONS; INTEGRAL CROSS SECTIONS; LAGRANGIAN FIELD THEORY; MEV RANGE 100-1000; NEUTRONS; PERTURBATION THEORY; PHOTON-NEUTRON INTERACTIONS; PHOTON-PROTON INTERACTIONS; PHOTOPRODUCTION; PROTONS; SCATTERING AMPLITUDES; THEORETICAL DATA; U-3 GROUPS
- Descriptors DEC
- AMPLITUDES; BARYONS; BASIC INTERACTIONS; BOSONS; CATIONS; CHARGED PARTICLES; CROSS SECTIONS; DATA; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; FUNCTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; LIE GROUPS; MESONS; MEV RANGE; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SYMMETRY GROUPS; U GROUPS
Optional Information
- Notes
- 18 refs.