The quark--diquark model of the nucleon and properties of the Pomeron and odderon NN -scattering amplitudes in the Born approximation of QCD
- Institute of Terrestrial Physics, USSR Academy of Sciences (SU)
The helicity-conserving and nonconserving {ital NN}-scattering amplitudes in Pomeron and odderon exchanges are calculated in the Born approximation of QCD for the nucleon modeled as a quark and a scalar {ital ud} diquark. The Pomeron amplitude is insensitive to the diquark size for small {vert bar}{ital t}{vert bar}. The odderon amplitude without spin-flip falls off with decreasing diquark radius. The contribution of odderon exchange to the ratio Re {ital T}/Im {ital T} for forward {ital pp} scattering is {similar to}0.02 for the symmetric nucleon and {similar to}0.005{endash}0.01 for the nucleon with a compact diquark of radius {similar to}0.2{endash}0.3 F. In the case of a compact diquark the contribution of Pomeron{endash}odderon interference to the polarization in {ital pp} scattering is {similar to}0.5{endash}1% at {vert bar}{ital t}{vert bar}{similar to}0.3 (GeV/{ital c}){sup 2}.
- OSTI ID:
- 5286386
- Journal Information:
- Soviet Journal of Nuclear Physics (English Translation); (USA), Vol. 49:5; ISSN 0038-5506
- Country of Publication:
- United States
- Language:
- English
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NUCLEON-NUCLEON INTERACTIONS
AMPLITUDES
NUCLEONS
QUARK MODEL
BORN APPROXIMATION
HELICITY
POMERANCHUK PARTICLES
QUANTUM CHROMODYNAMICS
SCATTERING AMPLITUDES
SPIN FLIP
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties