Study about Light Hypernuclei and YN Interaction Based on Chiral SU(3) Quark Model

ZHANG Miao-Jing; SHEN Peng-Nian; LIU Xian-Hui; KONG Fan-Xin

Chinese Physics C> 2001, Vol. 25> Issue(8) : 743-753

Study about Light Hypernuclei and YN Interaction Based on Chiral SU(3) Quark Model

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039,China2 Department of Physics,Guangxi Teacher's University,Guilin 541004,China3 Institute or Theoretical Physics,The Chinese Academy of Sciences,Beijing 100080,China4 Center of Theoretical Nuclear Physics,National Lab. of Heavy Ion Accelerator,Lanzhou 730000,China

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Abstract：
In terms of the YN interaction based on the chiral SU(3) quark model,the spectra of light hypernuclei 4ΛH,4ΛHe and 5ΛHe are calculated. The result shows that the effective local ΛN potential,as an approximation,cannot offer a reasonable explanation of the empirical data, while the non-local ΛN potential,also as an approximation,can provide a reasonable range of the binding energy of 5ΛHe and correct ordering of the energy levers of 4ΛH,4ΛHe. This indicates that the non-local character of the effective YN interaction plays an important role in binding behavior. The upper bounds and lower bounds of energy levels are given by employing two sets of model parameters in the calculation. Thus,the experimental data of hypernuclei can provide more information as the constraints of model. In the present stage,YN interaction(no matter phenomenology of theoretical interaction) cannot be finalized due to lack of experimental data. Utilizing experimental data,it is possible to optimize model parameters in the theoretical studies of YN interaction.

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[1]

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ZHANG Miao-Jing, SHEN Peng-Nian, LIU Xian-Hui and KONG Fan-Xin. Study about Light Hypernuclei and YN Interaction Based on Chiral SU(3) Quark Model[J]. Chinese Physics C, 2001, 25(8): 743-753.

ZHANG Miao-Jing, SHEN Peng-Nian, LIU Xian-Hui and KONG Fan-Xin. Study about Light Hypernuclei and YN Interaction Based on Chiral SU(3) Quark Model[J]. Chinese Physics C, 2001, 25(8): 743-753. shu

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Received: 2000-08-25
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study about Light Hypernuclei and YN Interaction Based on Chiral SU(3) Quark Model

Corresponding author: ZHANG Miao-Jing,

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039,China2 Department of Physics,Guangxi Teacher's University,Guilin 541004,China3 Institute or Theoretical Physics,The Chinese Academy of Sciences,Beijing 100080,China4 Center of Theoretical Nuclear Physics,National Lab. of Heavy Ion Accelerator,Lanzhou 730000,China

Received Date: 2000-08-25

Accepted Date: 1900-01-01

Available Online: 2001-08-05

Abstract: In terms of the YN interaction based on the chiral SU(3) quark model,the spectra of light hypernuclei 4ΛH,4ΛHe and 5ΛHe are calculated. The result shows that the effective local ΛN potential,as an approximation,cannot offer a reasonable explanation of the empirical data, while the non-local ΛN potential,also as an approximation,can provide a reasonable range of the binding energy of 5ΛHe and correct ordering of the energy levers of 4ΛH,4ΛHe. This indicates that the non-local character of the effective YN interaction plays an important role in binding behavior. The upper bounds and lower bounds of energy levels are given by employing two sets of model parameters in the calculation. Thus,the experimental data of hypernuclei can provide more information as the constraints of model. In the present stage,YN interaction(no matter phenomenology of theoretical interaction) cannot be finalized due to lack of experimental data. Utilizing experimental data,it is possible to optimize model parameters in the theoretical studies of YN interaction.

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Study about Light Hypernuclei and YN Interaction Based on Chiral SU(3) Quark Model

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