Mixing of the lowest-lying qqq configurations with JP=1/2- in different hyperfine interaction models

Jia Chen; Chunsheng An; Hong Chen

doi:10.1088/1674-1137/42/3/034104

Chinese Physics C> 2018, Vol. 42> Issue(3) : 034104 DOI: 10.1088/1674-1137/42/3/034104

Mixing of the lowest-lying qqq configurations with J^P=1/2^- in different hyperfine interaction models

1.
School of Physical Science and Technology, Southwest University, Chongqing 400715, China

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Abstract：
We investigate mixing of the lowest-lying qqq configurations with J^P=1/2^- caused by the hyperfine interactions between quarks mediated by Goldstone Boson Exchange, One Gluon Exchange, and both Goldstone Boson and One Gluon exchange, respectively. The first orbitally excited nucleon, Σ, Λ and Ξ states are considered. Contributions of both the contact term and tensor term are taken into account. Our numerical results show that mixing of the studied configurations in the two employed hyperfine interaction models are very different. Therefore, the present results, which should affect the strong and electromagnetic decays of baryon resonances, may be used to examine the present employed hyperfine interaction models.
- quark model ,
- pentaquark states ,
- baryon resonances

References

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Jia Chen, Chunsheng An and Hong Chen. Mixing of the lowest-lying qqq configurations with J^P=1/2^- in different hyperfine interaction models[J]. Chinese Physics C, 2018, 42(3): 034104. doi: 10.1088/1674-1137/42/3/034104

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Received: 2017-09-23
Revised: 2018-01-02

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Supported by National Natural Science Foundation of China (11675131,11645002), Chongqing Natural Science Foundation (cstc2015jcyjA00032) and Fundamental Research Funds for the Central Universities (SWU115020)

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Mixing of the lowest-lying qqq configurations with J^P=1/2^- in different hyperfine interaction models

Corresponding author: Chunsheng An,

1. School of Physical Science and Technology, Southwest University, Chongqing 400715, China

Received Date: 2017-09-23

Accepted Date: 2018-01-02

Available Online: 2018-03-05

Fund Project: Supported by National Natural Science Foundation of China (11675131,11645002), Chongqing Natural Science Foundation (cstc2015jcyjA00032) and Fundamental Research Funds for the Central Universities (SWU115020)

Abstract: We investigate mixing of the lowest-lying qqq configurations with J^P=1/2^- caused by the hyperfine interactions between quarks mediated by Goldstone Boson Exchange, One Gluon Exchange, and both Goldstone Boson and One Gluon exchange, respectively. The first orbitally excited nucleon, Σ, Λ and Ξ states are considered. Contributions of both the contact term and tensor term are taken into account. Our numerical results show that mixing of the studied configurations in the two employed hyperfine interaction models are very different. Therefore, the present results, which should affect the strong and electromagnetic decays of baryon resonances, may be used to examine the present employed hyperfine interaction models.

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Mixing of the lowest-lying qqq configurations with J^P=1/2^- in different hyperfine interaction models

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