Poles and thresholds and unstable particles
Consequences of assuming that transition amplitudes display some analyticity in the coupling constants are investigated. This permits demonstration of the existence of singularities associated with unstable and virtual particles, similar to those required by unitarity for stable particles. It is simple to determine on which Riemann sheets lie the unstable and virtual particle singularities, and the stable particle singularities can also be shown to be absent from certain sheets.
- Research Organization:
- St. John's Coll., Cambridge, Eng.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-022467
- OSTI ID:
- 4693002
- Journal Information:
- Il Nuovo Cimento, Journal Name: Il Nuovo Cimento Journal Issue: 1 Vol. 28; ISSN 1827-6121
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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