相对论平均场理论对&and;,&Xi;和&sum;超核的研究(英文)

刘子鑫; 夏铖君; 孙亭亭

doi:10.11804/NuclPhysRev.35.04.523

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

相对论平均场理论对∧,Ξ和∑超核的研究(英文)

刘子鑫, 夏铖君, 孙亭亭

文章导航 > 原子核物理评论 > 2018 > 35(4): 523-530

刘子鑫, 夏铖君, 孙亭亭. 相对论平均场理论对∧,Ξ和∑超核的研究(英文)[J]. 原子核物理评论, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

引用本文:

刘子鑫, 夏铖君, 孙亭亭. 相对论平均场理论对∧,Ξ和∑超核的研究(英文)[J]. 原子核物理评论, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

LIU Zixin, XIA Chengjun, SUN Tingting. Relativistic Mean-field Approach for ∧, Ξ and ∑ Hypernuclei[J]. Nuclear Physics Review, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

Citation:

LIU Zixin, XIA Chengjun, SUN Tingting. Relativistic Mean-field Approach for ∧, Ξ and ∑ Hypernuclei[J]. Nuclear Physics Review, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

相对论平均场理论对∧,Ξ和∑超核的研究(英文)

doi: 10.11804/NuclPhysRev.35.04.523

1.
郑州大学物理工程学院, 郑州 450001;
2.
浙江大学宁波理工学院, 浙江宁波 300071

基金项目: 国家自然科学基金资助项目（11505157，11705163）；郑州大学物理学科推进计划（32410017）

详细信息

中图分类号: O571.6

Relativistic Mean-field Approach for ∧, Ξ and ∑ Hypernuclei

1.
School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China;
2.
School of Information Science and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, Zhejiang, China

Funds: National Natural Science Foundation of China (11505157, 11705163); Physics Research and Development Program of Zhengzhou University (32410017)

摘要: 基于相对论平均场理论，系统地研究了单∧，Ξ和∑超核，超子-核子相互作用通过拟合实验数据以及参照之前理论工作来确定。以¹⁶O为核芯，通过加入不同类型超子（∧，Ξ^0，-和∑^+，0，-），比较了超子的平均势场和单粒子能级，并研究了对核芯的杂质效应。整体上看，∧和Ξ⁰超子在大块性质上类似；Ξ⁰超子平均势场最浅；库仑相互作用对于带电超子Ξ^-，∑⁺和∑^-非常重要。作为杂质，原子核中加入超子会使整个体系更束缚。然而，不同超子对原子核的半径有不同效应。此外，讨论了ωYY张量耦合，发现其对超子的能级劈裂有显著影响，甚至导致Ξ超子中出现能级反转现象。

Single ∧, Ξ, and ∑ hypernuclei are systematically studied within the framework of relativistic mean-field (RMF) model with YN interactions being constrained according to the experimental data and previous theoretical efforts. By adding a hyperon to ¹⁶O, the mean-field potentials and single-particle levels for hyperons (∧, Ξ^0,-, and ∑^+,0,-) are compared and the impurity effects on the nuclear core are examined. In general, the ∧ and ∑⁰ hyperons show similar behaviors in bulk properties since both of them are electroneutral and with similar coupling constants; Ξ⁰ hyperon owns the shallowest mean-field potential well; and Coulomb interactions play vital roles in the charged Ξ^-, ∑^-, and ∑⁺ hyperons. As an impurity, the intruded single-hyperon makes the nuclear system more bound in most cases due to the attractive NY interaction. However, very different effects on the nucleon radii are observed for different hyperons. Besides, the effects of the ωYY tensor couplings on the spin-orbit splitting are discussed, and remarkable influences are found which even change the level ordering of Ξ hyperon.
- 超核 /
- 超子-核子相互作用 /
- &omega /
- YY张量耦合 /
- 相对论平均场模型
Abstract: Single ∧, Ξ, and ∑ hypernuclei are systematically studied within the framework of relativistic mean-field (RMF) model with YN interactions being constrained according to the experimental data and previous theoretical efforts. By adding a hyperon to ¹⁶O, the mean-field potentials and single-particle levels for hyperons (∧, Ξ^0,-, and ∑^+,0,-) are compared and the impurity effects on the nuclear core are examined. In general, the ∧ and ∑⁰ hyperons show similar behaviors in bulk properties since both of them are electroneutral and with similar coupling constants; Ξ⁰ hyperon owns the shallowest mean-field potential well; and Coulomb interactions play vital roles in the charged Ξ^-, ∑^-, and ∑⁺ hyperons. As an impurity, the intruded single-hyperon makes the nuclear system more bound in most cases due to the attractive NY interaction. However, very different effects on the nucleon radii are observed for different hyperons. Besides, the effects of the ωYY tensor couplings on the spin-orbit splitting are discussed, and remarkable influences are found which even change the level ordering of Ξ hyperon.
- hypernuclei /
- hyperon-nucleon interaction /
- &omega /
- YY tensor coupling /
- RMF model

[1]	DANYSZ M, PNIEWSKI J. Philos Mag, 1953, 44:348.
[2]	HASHIMOTO O, TAMURA H. Prog Part Nucl Phys, 2006, 57:564.
[3]	GAL A, HUNGERFORD E V, MILLENER D J. Rev Mod Phys, 2016, 88:035004.
[4]	NAGAE T. Prog Theor Phys Suppl, 2010, 185:299.
[5]	HAO J, KUO T T S, REUBER A, et al. Phys Rev Lett, 1993, 71:1498.
[6]	HIYAMA E, MOTOBA T, RIJKEN T A, et al. Prog Theor Phys Suppl, 2010, 185:1.
[7]	SCHAFFNER-BIELICH J. Nucl Phys A, 2008, 804:309.
[8]	XING X Y, HU J N, SHEN H. Phys Rev C, 2017, 95:054310.
[9]	SUN T T, XIA C J, ZHANG S S, et al. Chin Phys C, 2018, 42:025101.
[10]	HAYANO R S, ISHIKAWA T, IWASAKI M, et al. Phys Lett B, 1989, 231:355.
[11]	PROWSE D J. Phys Rev Lett, 1966, 17:782.
[12]	DANYSZ M, GARBOWSKA K, PNIEWSKI J, et al. Nucl Phys, 1963, 49:121.
[13]	AOKI S, BAHK S Y, CHUNG K S, et al. Prog Theor Phys, 1991, 85:1287.
[14]	KHAUSTOV P, ALBURGER D E, BARNES P D, et al. Phys Rev C, 2000, 61:054603.
[15]	AOKI S, BAHK S Y, CHUNG K S, et al. Prog Theor Phys, 1993, 89:493.
[16]	NAKAZAWA K, ENDO Y, FUKUNAGA S, et al. Prog Theor Exp Phys, 2015, 2015:033D02.
[17]	MOTOBA T, BANDŌ H, IKEDA K. Prog Theor Phys, 1983, 70:189.
[18]	HIYAMA E, KAMIMURA M, YAMAMOTO Y, et al. Phys Rev Lett, 2010, 104:212502.
[19]	ZHOU X R, SCHULZE H J, SAGAWA H, et al. Phys Rev C, 2007, 76:034312.
[20]	LU B N, ZHAO E G, ZHOU S G. Phys Rev C, 2011, 84:014328.
[21]	HIYAMA E, KAMIMURA M, MOTOBA T, et al. Phys Rev C, 1996, 53:2075.
[22]	ZHOU X R, POLLS A, SCHULZE H J, et al. Phys Rev C, 2008, 78:054306.
[23]	LÜ H F, MENG J. Chin Phys Lett, 2002, 19:1775.
[24]	SONG C Y, YAO J M. Chin Phys C, 2010, 34:1425.
[25]	LU W L, LIU Z X, REN S H, et al. J Phys G:Nucl Part Phys, 2017, 44:125104.
[26]	REN S H, SUN T T, ZHANG W. Phys Rev C, 2017, 95:054318.
[27]	SUN T T, LU W L, ZHANG S S. Phys Rev C, 2017, 96:044312.
[28]	BANDŌ H, MOTOBA T, ŽOFKA J. Int J Mod Phys A, 1990, 05:4021.
[29]	GAL A, SOPER J M, DALITZ R H. Ann Phys (N.Y.), 1971, 63:53.
[30]	MILLENER D J. Nucl Phys A, 2008, 804:84.
[31]	ISAKA M, KIMURA M, DOTE A. Phys Rev C, 2011, 83:044323.
[32]	BROCKMANN R, WEISE W. Phys Lett B, 1977, 69:167.
[33]	MAREŠ J, JENNINGS B K. Phys Rev C, 1994, 49:2472.
[34]	SHEN H, YANG F, TOKI H. Prog Theor Phys, 2006, 115:325.
[35]	LIU Z X, XIA C J, LU W L, et al. Phys Rev C, 2018, 98:024316.
[36]	WIRTH R, GAZDA D, NAVRATIL P, ét al. Phys Rev Lett, 2014, 113:192502.
[37]	SERT B D, WALECKA J D. Adv Nucl Phys, 1986, 16:1.
[38]	MENG J, ZHOU S G. J Phys G:Nucl Part Phys, 2015, 42:093101.
[39]	SUN T T. Sci Sin Phys Mech Astron, 2016, 42:012006. (in Chinese)
[40]	BRÜCKNER W, FAESSLER M A, KETEL T J, et al. Phys Lett B, 1978, 79:157.
[41]	LONG W H, MENG J, VAN GIAI N, et al. Phys Rev C, 2004, 69:034319.
[42]	SUN T T, HIYAMA E, SAGAWA H, et al. Phys Rev C, 2016, 94:064319.
[43]	FORTIN M, AVANCINI S S, PROVIDÊNCIA C, et al. Phys Rev C, 2017, 95:065803.
[44]	NAGAE T, MIYACHI T, FUKUDA T, et al. Phys Rev Lett, 1998, 80:1605.
[45]	DOVER C B, GAL A. Prog Part Nucl Phys, 1984, 12:171.
[46]	NAGELS M M, RIJKEN T A, DE SWART J J. Phys Rev D, 1975, 12:744.

点击查看大图

计量

文章访问数: 1526
HTML全文浏览量: 188
PDF下载量: 76
被引次数: 0

相对论平均场理论对∧,Ξ和∑超核的研究(英文)

doi: 10.11804/NuclPhysRev.35.04.523

1. 郑州大学物理工程学院, 郑州 450001;

2. 浙江大学宁波理工学院, 浙江宁波 300071

基金项目: 国家自然科学基金资助项目（11505157，11705163）；郑州大学物理学科推进计划（32410017）

收稿日期: 2018-09-23
修回日期: 2018-11-03
刊出日期: 2020-05-03

中图分类号: O571.6

关键词:

超核 /

超子-核子相互作用 /

&omega /

YY张量耦合 /

相对论平均场模型

摘要: 基于相对论平均场理论，系统地研究了单∧，Ξ和∑超核，超子-核子相互作用通过拟合实验数据以及参照之前理论工作来确定。以¹⁶O为核芯，通过加入不同类型超子（∧，Ξ^0，-和∑^+，0，-），比较了超子的平均势场和单粒子能级，并研究了对核芯的杂质效应。整体上看，∧和Ξ⁰超子在大块性质上类似；Ξ⁰超子平均势场最浅；库仑相互作用对于带电超子Ξ^-，∑⁺和∑^-非常重要。作为杂质，原子核中加入超子会使整个体系更束缚。然而，不同超子对原子核的半径有不同效应。此外，讨论了ωYY张量耦合，发现其对超子的能级劈裂有显著影响，甚至导致Ξ超子中出现能级反转现象。

Single ∧, Ξ, and ∑ hypernuclei are systematically studied within the framework of relativistic mean-field (RMF) model with YN interactions being constrained according to the experimental data and previous theoretical efforts. By adding a hyperon to ¹⁶O, the mean-field potentials and single-particle levels for hyperons (∧, Ξ^0,-, and ∑^+,0,-) are compared and the impurity effects on the nuclear core are examined. In general, the ∧ and ∑⁰ hyperons show similar behaviors in bulk properties since both of them are electroneutral and with similar coupling constants; Ξ⁰ hyperon owns the shallowest mean-field potential well; and Coulomb interactions play vital roles in the charged Ξ^-, ∑^-, and ∑⁺ hyperons. As an impurity, the intruded single-hyperon makes the nuclear system more bound in most cases due to the attractive NY interaction. However, very different effects on the nucleon radii are observed for different hyperons. Besides, the effects of the ωYY tensor couplings on the spin-orbit splitting are discussed, and remarkable influences are found which even change the level ordering of Ξ hyperon.

English Abstract

Relativistic Mean-field Approach for ∧, Ξ and ∑ Hypernuclei

1. School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China;

2. School of Information Science and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, Zhejiang, China

Funds: National Natural Science Foundation of China (11505157, 11705163); Physics Research and Development Program of Zhengzhou University (32410017)

Received Date: 2018-09-23
Rev Recd Date: 2018-11-03
Publish Date: 2020-05-03

Keywords:

Abstract: Single ∧, Ξ, and ∑ hypernuclei are systematically studied within the framework of relativistic mean-field (RMF) model with YN interactions being constrained according to the experimental data and previous theoretical efforts. By adding a hyperon to ¹⁶O, the mean-field potentials and single-particle levels for hyperons (∧, Ξ^0,-, and ∑^+,0,-) are compared and the impurity effects on the nuclear core are examined. In general, the ∧ and ∑⁰ hyperons show similar behaviors in bulk properties since both of them are electroneutral and with similar coupling constants; Ξ⁰ hyperon owns the shallowest mean-field potential well; and Coulomb interactions play vital roles in the charged Ξ^-, ∑^-, and ∑⁺ hyperons. As an impurity, the intruded single-hyperon makes the nuclear system more bound in most cases due to the attractive NY interaction. However, very different effects on the nucleon radii are observed for different hyperons. Besides, the effects of the ωYY tensor couplings on the spin-orbit splitting are discussed, and remarkable influences are found which even change the level ordering of Ξ hyperon.

刘子鑫, 夏铖君, 孙亭亭. 相对论平均场理论对∧,Ξ和∑超核的研究(英文)[J]. 原子核物理评论, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

引用本文:

刘子鑫, 夏铖君, 孙亭亭. 相对论平均场理论对∧,Ξ和∑超核的研究(英文)[J]. 原子核物理评论, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

LIU Zixin, XIA Chengjun, SUN Tingting. Relativistic Mean-field Approach for ∧, Ξ and ∑ Hypernuclei[J]. Nuclear Physics Review, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523

Citation:

LIU Zixin, XIA Chengjun, SUN Tingting. Relativistic Mean-field Approach for ∧, Ξ and ∑ Hypernuclei[J]. Nuclear Physics Review, 2018, 35(4): 523-530. doi: 10.11804/NuclPhysRev.35.04.523