论文标题
$ t = 1 $，$ j^π= 6^+$的实验识别$^{54} $ co和isospin Symmetry in $ a = 54 $通过一核苷敲除反应研究
Experimental identification of the $T = 1$, $J^π = 6^+$ state of $^{54}$Co and isospin symmetry in $A = 54$ studied via one-nucleon knockout reactions
论文作者
论文摘要
提出了从$γ$ ray获得的新实验数据，并从$^{55} $ CO中获得了单中性敲除。根据与$^{54} $ co的$^{54} $ co中的$ t = 1，t_z = 0，j^π= 6^+$状态的候选者，是根据与$^{54} $ fe的新数据的比较提出的等素对称论点。此外，通过计算同质量质量多重方程（IMME）的实验性$ c $系数，可以研究$ a = 54 $，$ t = 1 $ t = 1 $ triblet的可能性差异，最大可能的$ j = 6 $（1f_ {7/2} $ coptim unigation） $^{56} $ ni。将实验量与从LSSM计算的理论上预测的$ c $系数进行了比较，使用从现实的手性有效的野外理论潜在的两体矩阵元件（在近代到次要到领导顺序上（n $^3 $ lo））获得的两体矩阵元素。
New experimental data obtained from $γ$-ray tagged one-neutron and one-proton knockout from $^{55}$Co is presented. A candidate for the sought-after $T=1, T_z = 0, J^π = 6^+$ state in $^{54}$Co is proposed based on a comparison to the new data on $^{54}$Fe, the corresponding observables predicted by large-scale-shell-model (LSSM) calculations in the full $fp$-model space employing charge-dependent contributions, and isospin-symmetry arguments. Furthermore, possible isospin-symmetry breaking in the $A=54$, $T=1$ triplet is studied by calculating the experimental $c$ coefficients of the isobaric mass multiplet equation (IMME) up to the maximum possible spin $J=6$ expected for the $(1f_{7/2})^{-2}$ two-hole configuration relative to the doubly-magic nucleus $^{56}$Ni. The experimental quantities are compared to the theoretically predicted $c$ coefficients from LSSM calculations using two-body matrix elements obtained from a realistic chiral effective field theory potential at next-to-next-to-next-to-leading order (N$^3$LO).
