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Observation of the radiative decay eta'. -->. omega gamma. in the reaction. pi. /sup -/p. -->. pi. /sup +/. pi. /sup -/3. gamma. n

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ; ;
We have obtained 68 +- 9 events of the previously unseen radiative decay eta' ..-->.. ..omega gamma.. (..omega.. ..-->.. ..pi../sup +/..pi../sup -/..pi../sup 0/, ..pi../sup 0/ ..-->.. ..gamma gamma..) in a charged- and neutral-particle spectrometer. Simultaneously, 1505 events of the decay eta' ..-->.. eta..pi../sup +/..pi../sup -/(..nu.. ..-->.. ..gamma gamma..) were collected in the same apparatus, allowing a direct measurement of this branching ratio. We find (eta' ..-->.. ..omega gamma..)/(eta' ..-->.. eta..pi../sup +/..pi../sup -/) = (6.8 +- 1.3) % and use published data to derive (eta' ..-->.. rho..gamma..)/(eta' ..-->.. ..omega gamma..) = 9.9 +- 2.0, in excellent agreement with predictions based on vector meson dominance.
Research Organization:
Department of Physics, Carleton University, Ottawa, Ontario K1S 5B6, Canada
OSTI ID:
7222931
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 38:17; ISSN PRLTA
Country of Publication:
United States
Language:
English

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Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645104 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
BRANCHING RATIO
DECAY
EFFECTIVE MASS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
ETA-958 RESONANCES
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
OMEGA-784 RESONANCES
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
VECTOR DOMINANCE MODEL
VECTOR DOMINANCE MODEL GEV RANGE 01-10
VECTOR MESONS