Double-heavy tetraquarks with strangeness in the chiral quark model  

作　　者：陈晓云 王福来 谭悦 杨友昌 Xiaoyun Chen;Fu-Lai Wang;Yue Tan;Youchang Yang(College of Science,Jinling Institute of Technology,Nanjing 211169,China;School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China;Research Center for Hadron and CSR Physics,Lanzhou University,Lanzhou 730000,China;Institute of Modern Physics of CAS,Lanzhou 730000,China;Department of Physics,Yancheng Institute of Technology,Yancheng 224000,China;Guizhou University of Engineering Science,Bijie 551700,China;Zunyi Normal University,Zunyi 563000,China)

机构地区：[1]College of Science,Jinling Institute of Technology,Nanjing 211169,China [2]School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China [3]Research Center for Hadron and CSR Physics,Lanzhou University,Lanzhou 730000,China [4]Institute of Modern Physics of CAS,Lanzhou 730000,China [5]Department of Physics,Yancheng Institute of Technology,Yancheng 224000,China [6]Guizhou University of Engineering Science,Bijie 551700,China [7]Zunyi Normal University,Zunyi 563000,China

出　　处：《Chinese Physics C》2023年第2期29-40,共12页中国物理C（英文版）

基　　金：Supported partly by Natural Science Foundation of Jiangsu Province;China (BK20221166);the National Natural Science Foundation of China (12205125,847145, 12205249, 1865019)。

摘　　要：Recently,some progress has been made in the experiments on double-heavy tetraquarks,such as T_(cc)reported by the LHCb Collaboration and Xccssreported by the Belle Collaboration.Coming on the heels of our previous work about T_(cc) and T_(bb), we present a study on the bound and resonance states of their companions,QQqs(Q=c,b;q=u,s) tetraquarks with strange flavor in the chiral quark model.Two pictures,meson-meson and diquark-antidiquark ones,and their couplings were considered in our calculations.Isospin violation was neglected herein.Our numerical analysis indicated that the states ccus with 1/2(1^(+)) ald bbus with 1/2(1^(+)) are the most promising stable states against strong interactions.Besides,we found several resonance states for the double-heavy strange tetraquarks with the real scaling method.

关 键 词：quark model TETRAQUARKS resonance states 

分 类 号：O572.33[理学—粒子物理与原子核物理]