INTERPRETATION OF PION-NUCLEON SCATTERING RESULTS IN THE RESONANCE REGION
Recognizing that information on pion-nucleon scattering in the range (300 to 1500) Mev is insufficient for a complete and unambigous analysis in terms of angular-momentum amplitudes, a study is made employing restrictive assumptions related to the higher resonances. The pi -p angular distribution data are found consistent with resonances of (T,J) = (1/2,3/2/sup -/) and (1/2,5/2/sup +/) at 600 and 900 Mev respectively. A plausible, but nonunique, set of amplitudes is determined, and the only significant departure from a simple behavior is in the amplitude for the (1/2,1/2/sup +/) state, which could contain a resonance at 900 Mev. The LAMBDA /sup o/K/sup o/ production cross section shows features in agreement with such a resonance. A proposed phenomenological model based on the role of the (3/2,3/2/sup +/) pion-nucleon state predicts the existence of eight resonances below 1500 Mev. Experimental results are compared with the model and suggestions are made regarding possible tests. (auth)
- Research Organization:
- CERN, Geneva
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-015139
- OSTI ID:
- 4748949
- Journal Information:
- Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B, Journal Name: Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B Vol. Vol: (10), 27; ISSN NUCIA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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