Study of eta formation in photon-photon collisions

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

DOI:https://doi.org/10.1103/PhysRevD.33.844· OSTI ID:6285643

Aihara, H; Alston-Garnjost, M; Armitage, J C; Avery, R E; Barbaro-Galtieri, A; Barker, A R; Barnes, A V; Barnett, B A; Bauer, D A; Bengtsson, H

The two-photon production of the eta meson has been observed, and a value has been determined for the two-photon eta decay width by a measurement of the cross section sigma(e e e e eta) where eta elel. The measurement was made with the TPC/Two-Gamma facility at the SLAC e e collider PEP, with an accumulated data sample of 64.5 pb . The eta elel events were both triggered and detected by the pole-tip calorimeter. The measured two-photon eta decay width is GAMMA/sub etaarrow-rightgammagamma/ = 0.64 +- 0.14 (statistical) +- 0.13 (systematic) keV, in agreement with earlier similarly determined values.

• Research Organization: Lawrence Berkeley Laboratory, Berkeley, California 94720
• DOE Contract Number: AC02-76ER03066; AC02-85ER40194; AC03-76SF00098; AA03-76SF00034
• OSTI ID: 6285643
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 33:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CROSS SECTIONS
DATA
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ETA MESONS
EXPERIMENTAL DATA
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MEASURING INSTRUMENTS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE WIDTHS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RADIATIVE DECAY
SHOWER COUNTERS