Positron-electron annihilation in flight at 600 MeV
About 30 km of 600 Mev positron tracks were followed in a propane bubble chamber operating in a magnetic field. 575 positron-electron annihilation events were observed giving, after corrections, a cross-section of 1.563 mb plus or minus 4.5%. The experimental corrections are small and are described in detail. The result is compared with the calculation of lowest-order quantum electrodynamics. The ratio sigma /sub exp// sigma /sub th.loweest order/ = 1.085 plus or minus 0.047. This ratio together with those obtained from other experiments are compared to theoretical predictions of deviations from the lowest- order calculation due to radiative corrections and due to possible failures in quantum electrodynamics. (auth)
- Research Organization:
- Universite, Lausanne, Switzerland
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-016986
- OSTI ID:
- 4744159
- Journal Information:
- Il Nuovo Cimento, Journal Name: Il Nuovo Cimento Journal Issue: 2 Vol. 27; ISSN 1827-6121
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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