Effective proton-neutron interaction in mirror nuclei

被引：0

作者：

Xing, Y. M. ^{[1
,2
]}

Luo, Y. F. ^{[1
,2
]}

Li, K. H. ^{[1
,3
]}

Zhang, Y. H. ^{[1
,2
]}

Li, J. G. ^{[1
,2
]}

Wang, M. ^{[1
,2
]}

Litvinov, Yu. A. ^{[1
,4
]}

Blaum, K. ^{[5
]}

Yan, X. L. ^{[1
,2
]}

Liao, T. ^{[1
,2
]}

Zhang, M. ^{[1
,2
]}

Zhou, X. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China

[3] Henan Normal Univ, Inst Particle & Nucl Phys, Xinxiang 453007, Peoples R China

[4] GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany

[5] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

来源：

PHYSICAL REVIEW C | 2025年 / 111卷 / 02期

基金：

国家重点研发计划;

关键词：

STATES; SPECTROSCOPY; DEFORMATION;

D O I：

10.1103/PhysRevC.111.024313

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Effective proton-neutron interactions, Vpn, in mirror nuclei are systematically analyzed using the groundstate atomic masses. A mirror symmetry of Vpn is found for bound nuclei with a standard deviation of sigma = 32 keV. However, this mirror symmetry is apparently broken for some mirror-nuclei pairs when a protonunbound nucleus is involved in extracting the Vpn values. Such a mirror-symmetry breaking is attributed to the Thomas-Ehrman shift of the proton-unbound nucleus and is investigated by using the Gamow shell model. It is concluded that the Thomas-Ehrman shift originates mainly from reduced Coulomb energies in the protonunbound nuclei due to the extended radial density distribution of valence protons.

引用

页数：6

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