Beyond-mean-field study of^(37)_(Λ)Ar based on the Skyrme-Hartree-Fock model  

作　　者：Ji-Wei Cui Ruizhe Wang Xian-Rong Zhou 崔继伟;王瑞哲;周先荣(School of Physics,Xidian University,Xi'an 710071,China;FLEETCOR Technologies 3280Peachtree Rd SUITE 2400,Atlanta,GA 30305,USA;Department of Physics,ast China Normal University,Shanghai 200241,China)

机构地区：[1]School of Physics,Xidian University,Xi'an 710071,China [2]FLEETCOR Technologies 3280Peachtree Rd SUITE 2400,Atlanta,GA 30305,USA [3]Department of Physics,ast China Normal University,Shanghai 200241,China

出　　处：《Chinese Physics C》2022年第7期172-179,共8页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China (11905165, 11775081, 12175071, 11547044);the 111 Project (B17035);the Fundamental Research Funds for the Central Universities (JB160510, XJS18020)

摘　　要：We present the hypernuclear states of^(37)_ΛAr obtained using the Skyrme-Hartree-Fock(SHF)model and a beyond-mean-field approach,including angular momentum projection(AMP)and the generator coordinate method(GCM).A comprehensive energy spectrum is given,which includes normally deformed(ND)and super deformed(SD)hypernuclear states with positive or negative parities.Energy levels corresponding to the configurations in which aΛhyperon occupies the s-,p-,or sd-shell orbitals are discussed.For the s-shellΛ,we pay special attention to the ND and SD states corresponding to the configurations^(36)Ar^(N)\otimes s_Λand^(36)Ar^(S)otimes s_Λ,where^(36)Ar^(N)and^(36)Ar^(S)denote the ND and SD nuclear cores,respectively.The disagreements between different models over theΛseparation energy of the SD state in previous studies are revisited.For the p-shellΛ,four rotational bands are predicted,and the impurity effects are shown.Furthermore,two energy levels corresponding to the configurations^(36)Ar^otimesΛ[101](3)(2)^(-)and^(36)Ar^(S)otimesΛ[101](1)(2)^(-)are obtained below the separation threshold of^(36)Ar+Λwithin 0.5 MeV.For the sd-shellΛ,three bound states are found near the separation threshold,and the mechanism behind these states are discussed.

关 键 词：Λhypernuclei Skyrme-Hartree-Fock model gamma transitions beyond-mean-field calculation 

分 类 号：O571[理学—粒子物理与原子核物理]