基于强子-夸克偶素模型和色磁相互作用口袋模型的奇异隐重味四夸克态质量谱  

The Mass Spectra of the Strange Hidden Heavy-flavored Tetraquark Under the Hadro-quarkonium Model and the Chromomagentic Interaction Bag Model

作　　者：刘文念 张文轩 马奭文 赵新军 王利云 LIU Wennian;ZHANG Wenxuan;MA Shiwen;ZHAO Xinjun;WANG Liyun(Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters,College of Physical Science and Technology,Yili Normal University,Yining 835000,Xinjiang,China;Institute of Theoretical Physics,College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China)

机构地区：[1]伊犁师范大学物理科学与技术学院,新疆凝聚态相变与微结构实验室,新疆伊宁835000 [2]西北师范大学物理与电子工程学院,兰州730070

出　　处：《原子核物理评论》2024年第4期949-958,共10页Nuclear Physics Review

基　　金：伊犁师范大学校级一般项目(2022YSYB013)。

摘　　要：基于强子-夸克偶素(Hadro-quarkonium,H-Q)模型和包含色磁相互作用(Chromomagentic interaction,CMI)的口袋模型分别计算了含有奇异夸克的隐重味四夸克系统qsQQ和ssQQ的质量谱。H-Q模型的计算结果表明,当重夸克偶素QQ处于激发态时,奇异介子和QQ之间的束缚能较大,可能会形成紧致结构,因此实验上可以通过QQ激发态至基态的衰变过程来识别。另外,用CMI口袋带模型对qSQQ和ssQQ的质量谱进行讨论:qsQQ的质量谱与实验上发现的Z_(cs)(4000)和Z_(cs)(4220)仅相差20MeV左右;对ssQQ的质量计算结果和部分的实验结果非常接近。据此支持含有奇异夸克的隐重味四夸克态可能具有更多的紧致结构。The mass spectra of hidden heavy-flavored tetraquark systems with strange quarks,qsQQ and ssQQ,are calculated based on the Hadro-quarkonium(H-Q)model and the bag model that includes chromomagnetic interaction(CMI).The results from the H-Q model indicate that when the heavy quarkonium QQ is in an excited state,the binding energy between the strange meson and QQ is significant,potentially forming a compact structure.Therefore,it is possible to identify such structures experimentally through the decay process from the excited state of QQ to the ground state.Additionally,we discuss the mass spectra of qQQ and ssQQ using the CMI bag model:the mass spectrum of qsQQ differs from the experimentally observed Z_(cs)(4000)and Z_(cs)(4220)by only about 20 MeV.The mass calculation results for ssQQ are in good agreement with some experimental findings.Based on this,we support the idea that exotic tetraquark states with strange quarks may exhibit more compact structures.

关 键 词：强子-夸克偶素 色磁相互作用 

分 类 号：O571.53[理学—粒子物理与原子核物理]