Pion photoproduction in a dynamical coupled-channel model

Journal Article · Mon Oct 24 00:00:00 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, Vol. 1374, Issue 1; Conference: MENU 2010: 12. international conference on meson-nucleon physics and the structure of the nucleon, Williamsburg, VA (United States), 31 May - 4 Jun 2010; Other Information: DOI: 10.1063/1.3647174; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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