Relativistic Mean-field Calculation on Λ Hypernuclei

Shen Yaosong; Ren Zhongzhou

Chinese Physics C> 1997, Vol. 21> Issue(S4) : 47-54

Relativistic Mean-field Calculation on Λ Hypernuclei

Department of Physics, Nanjing University, Nanjing, China

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Abstract：
The ground-state properties of Λ hypernuclei are studied theoretically using the relativistic mean-field theory with TM1 and NL-SH force parameters. It is found that these new parameters can very satisfactorily reproduce the ground-state properties of A hypernuclei. The parameter sets TM1 and NL-SH give very similar descriptions on hypernuclei. The properties of hypernuclei in baryon-hyperon systems are insensitive to the force parameters of effective nucleon-nucleon interactions. The influence of the pairing forces is also taken into account in the study of the Λ hyperon and it is found that it leads to an even-odd effect.
- relativistic mean-field theory ,
- Λ hypernuclei ,
- even-odd effect

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Shen Yaosong and Ren Zhongzhou. Relativistic Mean-field Calculation on Λ Hypernuclei[J]. Chinese Physics C, 1997, 21(S4): 47-54.

Shen Yaosong and Ren Zhongzhou. Relativistic Mean-field Calculation on Λ Hypernuclei[J]. Chinese Physics C, 1997, 21(S4): 47-54. shu

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Received: 1996-09-10

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沈阳化工大学材料科学与工程学院沈阳 110142

Relativistic Mean-field Calculation on Λ Hypernuclei

Shen Yaosong
Ren Zhongzhou

Department of Physics, Nanjing University, Nanjing, China

Received Date: 1996-09-10

Abstract: The ground-state properties of Λ hypernuclei are studied theoretically using the relativistic mean-field theory with TM1 and NL-SH force parameters. It is found that these new parameters can very satisfactorily reproduce the ground-state properties of A hypernuclei. The parameter sets TM1 and NL-SH give very similar descriptions on hypernuclei. The properties of hypernuclei in baryon-hyperon systems are insensitive to the force parameters of effective nucleon-nucleon interactions. The influence of the pairing forces is also taken into account in the study of the Λ hyperon and it is found that it leads to an even-odd effect.