Pion photoproduction in a dynamical coupled-channel model

Journal Article · Mon Oct 24 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647174· OSTI ID:21608427

Huang, F ^[1]; Doering, M ^[2]; Haberzettl, H ^[3]; Krewald, S ^[2]; Nakayama, K ^[1]

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1. Department of Physics and Astronomy, University of Georgia, Athens, GA 30602 (United States)
2. Institut fuer Kernphysik and Juelich Center for Hadron Physics, Forschungszentrum Juelich, 52425 Juelich (Germany)
3. Center for Nuclear Studies, Department of Physics, The George Washington University, Washington, DC 20052 (United States)

Pion photoproduction reactions are investigated in a dynamical coupled-channel approach based on the Juelich {pi}N model, which presently includes the hadronic {pi}N and {eta}N stable channels as well as the {pi}{Delta}, {sigma}N and {rho}N effective channels. This model has been quite successful in the description of {pi}N{yields}{pi}N scattering for center-of-mass energies up to 1.9 GeV. The full pion photoproduction amplitude is constructed to satisfy the generalized Ward-Takahashi identity and hence, it is fully gauge invariant. The calculated differential cross sections and photon spin asymmetries up to 1.65 GeV center-of-mass energy for the reactions {gamma}p{yields}{pi}{sup +}n, {gamma}p{yields}{pi}{sup 0}p and {gamma}n{yields}{pi}{sup -}p are in good agreement with the experimental data.

• OSTI ID: 21608427
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1374; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AMPLITUDES
ANGULAR MOMENTUM
ASYMMETRY
BARYONS
BASIC INTERACTIONS
BOSONS
CENTER-OF-MASS SYSTEM
CHIRALITY
COUPLED CHANNEL THEORY
CROSS SECTIONS
CURRENTS
DELTA BARYONS
DELTA-1232 BARYONS
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GAUGE INVARIANCE
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
MASSLESS PARTICLES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
N*BARYONS
NEUTRAL CURRENTS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PHOTON-PROTON INTERACTIONS
PHOTONS
PHOTOPRODUCTION
PION-NUCLEON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
RHO-770 MESONS
SCATTERING
SPIN
VECTOR MESONS