Quantum chromodynamics and Bloom-Gilman duality

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.2343· OSTI ID:7187986

Carlson, C E ^[1]; Mukhopadhyay, N C ^[2]

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1. Physics Department, College of William and Mary, Williamsburg, Virginia 23185 (USA)
2. Institute of Nuclear and Particle Physics, University of Virginia, Charlottesville, Virginia 22901 (USA) Paul Scherrer Institut, CH-5232 Villigen (Switzerland) Department of Physics, Rensselaer Polytechnic Institute, Troy, New York, 12180-3590 (USA)

We study the quantum-chromodynamic explanation of the long-established empirical connection, called the Bloom-Gilman duality, between scaling and resonance regimes of the inelastic structure function {nu}{ital W}{sub 2}({omega}{prime}), where {nu} and {omega}{prime} are the usual kinematic variables. We show how QCD expectations for the baryon transition form factors lead to the observed constancy with momentum transfer of the resonance/ background'' ratio. We can also understand why the resonance contribution follows with changing {ital Q}{sup 2} a curve whose shape is the same as the scaling-limit curve. We comment on the longitudinal response function and on possible contrasts in exciting resonances with different isospins. These await experimental scrutiny in newer-generation electron facilities.

• OSTI ID: 7187986
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DUALITY
ELECTRON-NUCLEON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
FIELD THEORIES
FORM FACTORS
FUNCTIONS
INELASTIC SCATTERING
INTERACTIONS
ISOSPIN
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MOMENTUM TRANSFER
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PERTURBATION THEORY
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SCATTERING
STRUCTURE FUNCTIONS