Strange decays of nonstrange baryons
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 *}, and {Sigma}K{sup *}, 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. The 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. They 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. The authors results compare favorably with the results of partial wave analyses of the limited existing data for the {Lambda}K and {Sigma}K channels. They 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.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 755925
- Report Number(s):
- DOE/ER/40150-1499; JLAB-THY-98-15; nucl-th/9804070; FSU-SCRI-98-42; TRN: US0002602
- Journal Information:
- Phys.Rev. D58 (1998) 074011, Other Information: Submitted to Phys.Rev. D58 (1998) 074011; PBD: 1 Apr 1998
- Country of Publication:
- United States
- Language:
- English
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