Production of hadrons by a longitudinal photon (small q/sup 2/)

Journal Article · Tue Nov 01 04:00:00 EST 1983 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6953755

Achasov, N N; Karnakov, V A

It is argued that the longitudinal photon plays an important role in hadron production, contrary to the opinion contained in the generalized vector-dominance model. It is shown that the simplest model of vector dominance and the assumption that the scattering cross sections are independent of the helicity of the vector meson provide a good description of the experimental data on the reaction e+p..-->..e+X in the Regge region of the process ..gamma..*p..--> gamma..*p. It is shown also that the experimental data on lepton production of vector mesons for small virtuality of the photon (Vertical Barq/sup 2/Vertical Bar< or =0.6--1.0 GeV/sup 2//c/sup 2/) are compatible with an appreciable contribution from the longitudinal photon (no dependence of the scattering cross sections on the helicity of the vector meson). The role of the longitudinally polarized photon in the reaction ..gamma..*..gamma -->..hadrons is discussed.

• Research Organization: Institute of Mathematics, Siberian Division, USSR Academy of Sciences
• OSTI ID: 6953755
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 38:5; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Electromagnetic Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATHEMATICAL MODELS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTOPRODUCTION
PROTONS
VECTOR DOMINANCE MODEL