Published November 2007 | Version v1
Journal article Metadata-only

A gauge-invariant chiral unitary framework for kaon photo- and electroproduction on the proton

Creators

  • 1. Universitaet Bonn, Helmholtz-Institut fuer Strahlen- und Kernphysik (Theorie), Bonn (Germany)
  • 2. Forschungszentrum Juelich, Institut fuer Kernphysik (Theorie), Juelich (Germany)

Description

We present a gauge-invariant approach to photoproduction of mesons on nucleons within a chiral unitary framework. The interaction kernel for meson-baryon scattering is derived from the chiral effective Lagrangian and iterated in a Bethe-Salpeter equation. Within the leading-order approximation to the interaction kernel, data on kaon photoproduction from SAPHIR, CLAS and CBELSA/TAPS are analyzed in the threshold region. The importance of gauge invariance and the precision of various approximations in the interaction kernel utilized in earlier works are discussed. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2007-10492-4

Additional details

Identifiers

DOI
10.1140/epja/i2007-10492-4;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
34
Journal Issue
2
Journal Page Range
p. 161-183
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
39024079
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANGULAR DISTRIBUTION; BETHE-SALPETER EQUATION; CHIRALITY; ELECTRON-PROTON INTERACTIONS; ELECTROPRODUCTION; EXCITATION FUNCTIONS; GAUGE INVARIANCE; GEV RANGE 01-10; INTEGRAL CROSS SECTIONS; ITERATIVE METHODS; KAONS NEUTRAL; KAONS PLUS; KERNELS; LAGRANGIAN FIELD THEORY; LAMBDA PARTICLES; MEV RANGE 100-1000; PERTURBATION THEORY; PHOTON-PROTON INTERACTIONS; PHOTOPRODUCTION; PION MINUS-PROTON INTERACTIONS; SIGMA MINUS PARTICLES; SIGMA NEUTRAL PARTICLES; SIGMA PLUS PARTICLES; THEORETICAL DATA; UNITARITY
Descriptors DEC
BARYONS; BASIC INTERACTIONS; BOSONS; CALCULATION METHODS; CROSS SECTIONS; DATA; DIFFERENTIAL CROSS SECTIONS; DISTRIBUTION; ELECTROMAGNETIC INTERACTIONS; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; EQUATIONS; FERMIONS; FIELD THEORIES; FUNCTIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYPERONS; INFORMATION; INTERACTIONS; INVARIANCE PRINCIPLES; KAONS; LAMBDA BARYONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; MESON-BARYON INTERACTIONS; MESON-NUCLEON INTERACTIONS; MESONS; MEV RANGE; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PION-NUCLEON INTERACTIONS; PION-PROTON INTERACTIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SIGMA BARYONS; SIGMA PARTICLES; STRANGE MESONS; STRANGE PARTICLES