Q/sup 2/ dependence of exclusive baryon-antibaryon production in photon-photon collisions

Journal Article · Sat Nov 01 04:00:00 EST 1986 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.34.2657· OSTI ID:7104355

Millers, D; Gunion, J F

We compute the cross sections for baryon-antibaryon production in photon-photon reactions in which one or both of the photons is off shell, i.e., virtual. Besides confirming the Q/sup 2/..-->..0 limits obtained previously by Farrar we demonstrate that the Q/sup 2/ dependence of the cross sections provides dramatic further tests of QCD and of the factorization formalism underlying the application of QCD to these reactions. In particular the Q/sup 2/ dependence is very sensitive to the baryon wave functions that are folded together with the hard-scattering quark-level tree graphs.

• Research Organization: Department of Physics, University of California, Davis, Davis, California 95616
• OSTI ID: 7104355
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 34:9; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIBARYONS
ANTIMATTER
ANTIPARTICLES
BARYONS
BASIC INTERACTIONS
CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXCLUSIVE INTERACTIONS
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PERTURBATION THEORY
PHOTON-PHOTON INTERACTIONS
POSTULATED PARTICLES
PROTONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SCATTERING
SHELL MODELS
VIRTUAL PARTICLES
WAVE FUNCTIONS