Photoproduction on pions and sum rule saturation

Journal Article · Sat Mar 31 23:00:00 EST 1979 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5884570

L'vov, A I

A model of hadron photoproduction on pions is considered at low and intermediate energies. In this model the reaction amplitude is the sum of the contributions of the s-channel resonances and one-pion exchange (OPE). The model is applied to the saturation of the Cabibbo-Radicati sum rule and the superconvergence sum rule for Compton scattering on pions. The inclusion of the OPE contributions leads to good saturation of the first sum rule and affects the earlier conclusion that the second sum rule is violated because of the contribution of the fixed pole J/sup P/=0/sup +/, I=2 in the ..gamma pi..-scattering amplitude. Violation of two-component duality in Compton scattering is pointed out.

• Research Organization: P. N. Lebedev Physics Institute, USSR Academy of Sciences
• OSTI ID: 5884570
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 29:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BASIC INTERACTIONS
BOSON-EXCHANGE MODELS
BOSONS
COMPTON EFFECT
DUALITY
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EQUATIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESONS
OBE MODEL
OPE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERIPHERAL MODELS
PHOTON-HADRON INTERACTIONS
PHOTOPRODUCTION
PIONS
PSEUDOSCALAR MESONS
S CHANNEL
SCATTERING
SCATTERING AMPLITUDES
SUM RULES