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Can the axial-vector form factor of the nucleon be determined from pion electroproduction

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:7230087
; ;
An analysis is made of a procedure of deriving a formula for the amplitude of pion electroproduction on nucleons using current algebra, PCAC, and single-particle saturation of the sums over intermediate states. It is shown that these hypotheses lead to an expression for the amplitude which contains unknown functions. An appropriate choice of these functions yields a gauge-invariant amplitude which depends on the non-pole part of the axial-vector form factor of the nucleon, g/sub A/(t). Another choice leads to a result which is independent of g/sub A/(t) and consistent with subtracted dispersion relations.
Research Organization:
Institute of Nuclear Physics, Electronics, and Automation at Tomsk Polytechnic Institute
OSTI ID:
7230087
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 24:2; ISSN SJNCA
Country of Publication:
United States
Language:
English

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Related Subjects

645206* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BARYONS
BASIC INTERACTIONS
BOSONS
CURRENTS
ELECTROMAGNETIC INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
FERMIONS
FORM FACTORS
GAUGE INVARIANCE
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
MESONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PCAC THEORY
PIONS
PSEUDOSCALAR MESONS