Two-photon exclusive processes in quantum chromodynamics

Conference · Tue Jul 01 04:00:00 EDT 1986

OSTI ID:5412356

Brodsky, S J

QCD predictions for ..gamma gamma.. annihilation into single mesons, meson pairs, and baryon pairs are reviewed. Two-photon exclusive processes provide the most sensitive and practical measure of the distribution amplitudes, and thus a critical confrontation between QCD and experiment. Both the angular distribution and virtual photon mass dependence of these amplitudes are sensitive to the shapes of the phi (chi, Q). Novel effects involving the production of qq anti q anti q states at threshold are also discussed, and a new method is presented for systematically incorporating higher-order QCD corrections in ..gamma gamma.. reactions.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5412356
• Report Number(s): SLAC-PUB-4022; CONF-8604238-1; ON: DE86014474
• 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
ANNIHILATION
BASIC INTERACTIONS
BOSONS
CORRECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXCLUSIVE INTERACTIONS
FIELD THEORIES
HADRONS
INTERACTIONS
KAONS
MESONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PHOTON-PHOTON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIVE CORRECTIONS
STRANGE MESONS
STRANGE PARTICLES