Chinese Physics C > 2004, Vol. 28 > Issue(6): 594-600

Spin-Orbit Force in Baryon Spectrum

YU You-Wen^,,
ZHANG Zong-Ye

Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
In the framework of the constituent quark model, the spin-orbit splitting of the lowest L=1 excited states of N and Λ are analyzed by using various quark potential models. The results show that only when a two gluon exchange phenomenological flavor dependent l·s term is considered in the potential, the spin-orbit splitting of N and two sets of Λ L=1 states can be explained simultaneously.

References

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YU You-Wen and ZHANG Zong-Ye. Spin-Orbit Force in Baryon Spectrum[J]. Chinese Physics C, 2004, 28(6): 594-600.

YU You-Wen and ZHANG Zong-Ye. Spin-Orbit Force in Baryon Spectrum[J]. Chinese Physics C, 2004, 28(6): 594-600. shu

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Received: 2003-12-08
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Spin-Orbit Force in Baryon Spectrum

YU You-Wen^,
ZHANG Zong-Ye

Corresponding author:YU You-Wen,

Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date:2003-12-08
Accepted Date:1900-01-01
Available Online:2004-06-05

Abstract:In the framework of the constituent quark model, the spin-orbit splitting of the lowest L=1 excited states of N and Λ are analyzed by using various quark potential models. The results show that only when a two gluon exchange phenomenological flavor dependent l·s term is considered in the potential, the spin-orbit splitting of N and two sets of Λ L=1 states can be explained simultaneously.