Photon-photon collisions
The study of photon-photon collisions has progressed enormously, stimulated by new data and new calculational tools for QCD. In the future we can expect precise determinations of ..cap alpha../sub s/ and ..lambda../sup ms/ from the ..gamma..*..gamma.. ..-->.. ..pi../sup 0/ form factor and the photon structure function, as well as detailed checks of QCD, determination of the shape of the hadron distribution amplitudes from ..gamma gamma.. ..-->.. H anti H, reconstruction of sigma/sub ..gamma gamma../ from exclusive channels at low W/sub ..gamma gamma../, definitive studies of high p/sub T/ hadron and jet production, and studies of threshold production of charmed systems. Photon-photon collisions, along with radiative decays of the psi and UPSILON, are ideal for the study of multiquark and gluonic resonances. We have emphasized the potential for resonance formation near threshold in virtually every hadronic exclusive channel, including heavy quark states c anti c c anti c, c anti c u anti u, etc. At higher energies SLC, LEP, ...) parity-violating electroweak effects and Higgs production due to equivalent Z/sup 0/ and W/sup + -/ beams from e ..-->.. eZ/sup 0/ and e ..-->.. nu W will become important. 44 references.
- Research Organization:
- Stanford Linear Accelerator Center, CA (USA)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 5968356
- Report Number(s):
- SLAC-PUB-3547; CONF-8409194-2; ON: DE85008056
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645201 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXOTIC RESONANCES
FIELD THEORIES
FUNCTIONS
HADRONS
INTERACTIONS
JET MODEL
MASSLESS PARTICLES
MATHEMATICAL MODELS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTON-PHOTON INTERACTIONS
PHOTONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RESONANCE PARTICLES
STRUCTURE FUNCTIONS