Strongly Isospin-mixed Doublet in ^(26)Si Observed by Decay of ^(26)P  

^(26)p β衰变中的同位旋混杂现象

作　　者：Liu Jiajian Xu Xinxing Sun Lijie Yuan Cenxi Kaneko Kazunari Sun Yang Liang Pengfei 刘嘉健

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [3]Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-Sen University,Zhuhai 519082,China [4]Department of Physics,Kyushu Sangyo University,Fukuoka 813-8503,Japan [5]Department of Physics,The University of Hong Kong,Hong Kong 9990077,China

出　　处：《IMP & HIRFL Annual Report》2022年第1期39-40,共2页中国科学院近代物理研究所和兰州重离子研究装置年报（英文版）

基　　金：Strategic Priority Research Program of Chinese Academy of Sciences(XDB34010300);Ministry of Science and Technology of China under National Key R&D Programs(2018YFA0404404 and 2016YFA0400503);CAS Project for Young Scientists in Basic Research(YSBR-002);Heavy Ion Research Facility in Lanzhou(HIRFL)under Grant(HIR2021ZD001);National Natural Science Foundation of China(12022501,12105329,U1932206,U1632136,11805120,12235020,12235003);Guangdong Major Project of Basic and Applied Basic Research(2021B0301030006 and 11490562);Continuous Basic Scientific Research Project(WDJC-2019-13)and Research Grants Council(RGC)of Hong Kong(AoE/P-404/18 and GRF-17304720)。

摘　　要：In 1932,W.Heisenberg proposed the concept of isospin to describe the symmetry in atomic nuclei due to the similar behaviors between neutrons and protons in the strong force^([1]).However,the symmetry of isospin is approximate because of proton-neutron mass di erence,Coulomb interaction,and charge-dependent parts of nuclear force.Such asymmetry leads to Fermi strength splitting into the isobaric analog state(IAS)and its neighboring states via strong isospin mixing,instead of focusing on only one state.

关 键 词：state force SYMMETRY 

分 类 号：O571.42[理学—粒子物理与原子核物理]