Effective Hyperon-Nucleon Interactions in the Relativistic Mean Field Theory

LV Hong-Feng; LONG Wen-Hui; MENG Jie; ZHOU Shan-Gui

Chinese Physics C> 2002, Vol. 26> Issue(9) : 933-940

Effective Hyperon-Nucleon Interactions in the Relativistic Mean Field Theory

School of Physics,Peking University,Beijing 100871,China2 Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080,China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China

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Abstract：
The effective Λ nucleon interaction in single Λ hypernuclei is studied using the Relativistic Mean Field theory. Five sets of hyperon meson coupling parameters,for Λ-σ and Λ-ω interactions, are obtained by fitting the recent data of the binding energy of a Λ in the 1s state of 13Λ C,B1s1/2Λ. The detailed method is to fix one of the parameters to be a special value such as 2/3 or 1,or to suppose two of them be equal,and then the parameter sets are deduced. With these parameter sets determined from only this experimental quantity,we calculate the single particle spectra of Λ in single-Λ hypernuclei for a wide range of mass number from A=9 to A=208. The calculations reproduce the available data well.

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LV Hong-Feng, LONG Wen-Hui, MENG Jie and ZHOU Shan-Gui. Effective Hyperon-Nucleon Interactions in the Relativistic Mean Field Theory[J]. Chinese Physics C, 2002, 26(9): 933-940.

LV Hong-Feng, LONG Wen-Hui, MENG Jie and ZHOU Shan-Gui. Effective Hyperon-Nucleon Interactions in the Relativistic Mean Field Theory[J]. Chinese Physics C, 2002, 26(9): 933-940. shu

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Received: 2001-10-16
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

Effective Hyperon-Nucleon Interactions in the Relativistic Mean Field Theory

Corresponding author: MENG Jie,

School of Physics,Peking University,Beijing 100871,China2 Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080,China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China

Received Date: 2001-10-16

Accepted Date: 1900-01-01

Available Online: 2002-09-05

Abstract: The effective Λ nucleon interaction in single Λ hypernuclei is studied using the Relativistic Mean Field theory. Five sets of hyperon meson coupling parameters,for Λ-σ and Λ-ω interactions, are obtained by fitting the recent data of the binding energy of a Λ in the 1s state of 13Λ C,B1s1/2Λ. The detailed method is to fix one of the parameters to be a special value such as 2/3 or 1,or to suppose two of them be equal,and then the parameter sets are deduced. With these parameter sets determined from only this experimental quantity,we calculate the single particle spectra of Λ in single-Λ hypernuclei for a wide range of mass number from A=9 to A=208. The calculations reproduce the available data well.

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Effective Hyperon-Nucleon Interactions in the Relativistic Mean Field Theory

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