Observation of rho-omega interference in the photoproduction of electron-positron pairs from carbon and a measurement of the rho- omega phase
1970
5 pages
Published in:
- Phys.Rev.Lett. 24 (1970) 1197-1201
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Abstract: (APS)
The electron-positron mass spectrum has been studied in the process γ+C→e++e−+C in the invariant-mass region between 675 and 850 MeV/c2. An enhancement in the region of the ω mass due to ρ−ω interference is clearly observed, and from a fit to the data we find γρ24π=0.50−0.10+0.12 and γω24π=3.5±1.2. The value of the relative phase of the ρ−ω photoproduction amplitudes is found to be 100−30+38 deg. The errors quoted are purely statistical.- photon nucleus: interaction
- interaction: photon nucleus
- final state
- carbon: positron: electron
- omega(783): leptonic decay
- leptonic decay: omega(783)
- positron: electron
- rho(765)
- model: rho-omega interference
- counters and detectors: experimental results
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