Strange decays of nonstrange baryons

Capstick, Simon; Roberts, W

doi:10.1103/PhysRevD.58.074011

Strange decays of nonstrange baryons

Journal Article · Wed Apr 01 04:00:00 EST 1998 · Phys.Rev. D58 (1998) 074011

DOI:https://doi.org/10.1103/PhysRevD.58.074011· OSTI ID:755925

Capstick, Simon; Roberts, W

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.

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Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)

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

Journal Information:: Phys.Rev. D58 (1998) 074011, Journal Name: Phys.Rev. D58 (1998) 074011

Country of Publication:: United States

Language:: English

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Strange decays of nonstrange baryons

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