Exploring hidden-charm and hidden-strange hexaquark states from lattice QCD  

作　　者：Hang Liu Jinchen He Liuming Liu Peng Sun Wei Wang Yi-Bo Yang Qi-An Zhang 

机构地区：[1]INPAC,Key Laboratory for Particle Astrophysics and Cosmology(MOE),Shanghai Key Laboratory for Particle Physics and Cosmology,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [2]Maryland Center for Fundamental Physics,Department of Physics,University of Maryland,College Park,Maryland 20742,USA [3]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]Department of Physics and Institute of Theoretical Physics,Nanjing Normal University,Nanjing 210023,China [6]Southern Center for Nuclear-Science Theory(SCNT),Institute of Modern Physics,Chinese Academy of Sciences,Huizhou 516000,China [7]CAS Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [8]School of Fundamental Physics and Mathematical Sciences,Hangzhou Institute for Advanced Study,UCAS,Hangzhou 310024,China [9]International Centre for Theoretical Physics Asia-Pacific,Beijing 100049/Hangzhou 310024,China [10]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [11]School of Physics,Beihang University,Beijing 102206,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第1期30-37,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11735010,11975127,11911530088,U2032102,12005130,12125503,and 12335003);supported by the Natural Science Foundation of Shanghai(Grant No.15DZ2272100);supported by Jiangsu Specially Appointed Professor Program;supported by the Strategic Priority Research Program of Chinese Academy of Sciences(Grant Nos.XDB34030303,and XDPB15);supported by the National Natural Science Foundation of China(NSFC)and Deutsche Forschungsgemeinschaft(DFG)joint grant(Grant No.12061131006)。

摘　　要：Based on five different ensembles of newly generated(2+1)-flavor configurations with pion mass of approximately mπ■(140-310)MeV,we present a lattice analysis of hidden-charm and hidden-strange hexaquarks with the quark content■.The correlation matrices of two types of operators with JPC=0++,0-+,1++and 1--are simulated to extract the masses of the hexaquark candidates,which are subsequently extrapolated to the physical pion mass and continuum limit.The results indicate that ground state masses are below the■threshold and provide a characteristic signal for the experimental discovery of hexaquark candidates,which may enrich the versatile structure of multiquarks;moreover,it is an indispensable step to decipher the nonperturbative nature of the fundamental interactions of quarks and gluons.

关 键 词：quantum chromodynamics lattice QCD multiquark states 

分 类 号：O572.33[理学—粒子物理与原子核物理]