Towards an amplitude analysis of exclusive. gamma gamma. processes

Conference · Wed Jun 01 00:00:00 EDT 1988

OSTI ID:7187364

Pennington, M R

The potential of two photon processes to shed light on the parton content of resonances, we maintain, can only be realized in practice by moving towards an Amplitude Analysis of experimental data. By using the process ..gamma gamma.. ..-->.. ..pi pi.. as an example, the way to do this is discussed. Presently claimed uncertainties in the ..gamma gamma.. width of even the well-known f/sub 2/ (1270) are shown to be over-optimistic and the fitted couplings of the overlapping scalar states in the 1 GeV region meaningless. Only the use of Amplitude Analysis techniques on the new higher statistics data from SLAC and DESY can resolve these uncertainties and lead to definite and significant results. 37 refs., 18 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7187364
• Report Number(s): BNL-41416; CONF-8804147-3; ON: DE88012853
• Resource Relation: Conference: 8. international workshop on photon-photon collisions, Shoresh, Israel, 24 Apr 1988; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PHOTON-PHOTON INTERACTIONS
SCATTERING AMPLITUDES
ANGULAR DISTRIBUTION
CROSS SECTIONS
ELASTIC SCATTERING
EXPERIMENTAL DATA
FEYNMAN DIAGRAM
INELASTIC SCATTERING
MASS SPECTRA
PARTONS
PHASE SHIFT
PION-PION INTERACTIONS
RESONANCE
REST MASS
S WAVES
AMPLITUDES
BASIC INTERACTIONS
DATA
DIAGRAMS
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
MASS
MESON-MESON INTERACTIONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE INTERACTIONS
POSTULATED PARTICLES
SCATTERING
SPECTRA
645101* - High Energy Physics- Particle Interactions & Properties-Experimental- Electromagnetic Interactions & Properties