Simple description of electroproduction and muoproduction in asymptotically free gauge theories
We propose a simple model for the structure functions characterizing deep-inelastic leptoproduction off nucleons. Our approach adapts the quark-parton model to include scaling violations predicted in asymptotically free gauge theories. With the normalization of ..nu..W/sub 2/ fixed by data at essentially two values of Q/sup 2/, we are able to predict ..nu..W/sub 2/ over the remaining, large experimental range. The agreement with the data is good even down to quite low values of Q/sup 2/ (Q/sup 2/ approx. = 1 GeV/sup 2/). Given our model for ..nu..W/sub 2/ and a model for F/sub L/, we obtain unique predictions for 2MW/sub 1/ and hence for R = sigma/sub L//sigma/sub T/. The agreement of the former with experiment is as good as in the case of ..nu..W/sub 2/. The predictions for R while still somewhat low at small x are substantially better, especially at high x, than those deduced previously in approaches based on asymptotically free gauge theories.
- Research Organization:
- Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada
- OSTI ID:
- 6322934
- Journal Information:
- Phys. Rev., D; (United States), Vol. 19:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRON-NUCLEON INTERACTIONS
DEEP INELASTIC SCATTERING
ELECTROPRODUCTION
GAUGE INVARIANCE
MUON-NUCLEON INTERACTIONS
COUPLING CONSTANTS
ISOLATED VALUES
PARTON MODEL
PERTURBATION THEORY
QUARK MODEL
SCALING LAWS
STRONG INTERACTIONS
STRUCTURE FUNCTIONS
THEORETICAL DATA
BASIC INTERACTIONS
COMPOSITE MODELS
DATA
DATA FORMS
ELECTROMAGNETIC INTERACTIONS
FUNCTIONS
INELASTIC SCATTERING
INFORMATION
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATHEMATICAL MODELS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
SCATTERING
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
645204 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties