Analytic properties of production amplitudes
It is shown that a production amplitude, considered as a function of a single scalar invariant, inevitably has complex singularities when four other scalar invariants are fixed at physical values. For the process N + pi yields N + pi + pi , with the nucleon-nucleon momentum transfer as the variable, the singularities can appear close to the pole to which extrapolations have been made when the other scalar invariants are fixed at typical experimental values. (auth)
- Research Organization:
- St. John's Coll., Cambridge, Eng.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-018958
- OSTI ID:
- 4011218
- Journal Information:
- Nuovo Cimento, Journal Name: Nuovo Cimento Journal Issue: 6 Vol. 19; ISSN 0029-6341
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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