Published December 1988 | Version v1
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Resonant production in two photon collisions

Creators

Description

Using 220 picobarn/sup /minus/1/ of data collected by the Mark II detector at PEP, we have measured the width of the /eta/' for quasi real photons. The width is separately measured in the three reactions e+e/sup /minus// → e+e/sup /minus///eta/0π+π/sup /minus//; /eta/0 → γγ, e+e/sup /minus// → e+e/sup /minus///eta/0π+π/sup /minus//; /eta/0 → π+π/sup /minus//(π0,γ) and e+e/sup /minus// → e+e/sup /minus///rho/0γ, giving a statistically weighted average two-photon width of Γ/sub /eta/'→γγ/ = 5. 21+-0.28 keV. As a by-product of the measurement of Γ/sub /eta/'→γγ/ using the decay mode /eta/' → /rho/γ, we also measured a two-photon decay width for the a2(1320) of Γ/sub a 2(1320)→γγ/ = 1.17+-0. 15+-0.25 keV. 47 refs., 50 figs., 8 tabs

Availability note (English)

MF available from INIS under the Report Number; Available from NTIS, PC A06/MF A01 - OSTI; 1 as DE89008168.

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Additional details

Publishing Information

Imprint Pagination
107 p.
Report number
LBL--26465

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20043715
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data, Thesis
Descriptors DEI
A2-1320 MESONS; CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; ETA PRIME-958 MESONS; EXPERIMENTAL DATA; MONTE CARLO METHOD; PARTICLE DECAY; PARTICLE IDENTIFICATION; PARTICLE WIDTHS; PEP STORAGE RINGS; PHOTON-PHOTON INTERACTIONS; SHOWER COUNTERS
Descriptors DEC
BASIC INTERACTIONS; BOSONS; DATA; DECAY; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; HADRONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MEASURING INSTRUMENTS; MESONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; RADIATION DETECTORS; STORAGE RINGS; TENSOR MESONS

Optional Information

Notes
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