Strange decays of nonstrange baryons
Journal Article
·
· Physical Review, D
- Supercomputer Computations Research Institute and Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
- Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)
The strong decays of excited nonstrange baryons into the final states {Lambda}K, {Sigma}K, and for the first time into {Lambda}(1405)K, {Lambda}(1520)K, {Sigma}(1385)K, {Lambda}K{sup {asterisk}}, and {Sigma}K{sup {asterisk}}, are examined in a relativized quark pair creation model. The wave functions and parameters of the model are fixed by previous calculations of N{pi} and N{pi}{pi}, etc., decays. Our results show that it should be possible to discover several new negative parity excited baryons and confirm the discovery of several others by analyzing these final states in kaon production experiments. We also establish clear predictions for the relative strengths of certain states to decay to {Lambda}(1405)K and {Lambda}(1520)K, which can be tested to determine if a three-quark model of the {Lambda}(1405)K is valid. Our results compare favorably with the results of partial wave analyses of the limited existing data for the {Lambda}K and {Sigma}K channels. We do not find large {Sigma}K decay amplitudes for a substantial group of predicted and weakly established negative-parity states, in contrast to the only previous work to consider decays of these states into the strange final states {Lambda}K and {Sigma}K. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 658516
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 58; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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