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

被引：9
作者：
Liu, Hang [1 ]
He, Jinchen [1 ,2 ]
Liu, Liuming [3 ,4 ]
Sun, Peng [3 ,5 ,6 ]
Wang, Wei [1 ,7 ]
Yang, Yi-Bo [7 ,8 ,9 ,10 ,11 ,12 ]
Zhang, Qi-An [13 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, Key Lab Particle Astrophys & Cosmol MOE, Shanghai Key Lab Particle Phys & Cosmol,INPAC, Shanghai 200240, Peoples R China
[2] Univ Maryland, Maryland Ctr Fundamental Phys, Dept Phys, College Pk, MD 20742 USA
[3] Inst Modern Phys, Chinese Acad Sci, Lanzhou 730000, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[5] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Peoples R China
[6] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Peoples R China
[7] Chinese Acad Sci, Inst Modern Phys, Southern Ctr Nucl Sci Theory SCNT, Huizhou 516000, Peoples R China
[8] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
[9] UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
[10] Int Ctr Theoret Phys Asia Pacific, Beijing 100049, Peoples R China
[11] Int Ctr Theoret Phys Asia Pacific, Hangzhou 310024, Peoples R China
[12] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[13] Beihang Univ, Sch Phys, Beijing 102206, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2024年 / 67卷 / 01期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
quantum chromodynamics; lattice QCD; multiquark states; HADRONS;
D O I：
10.1007/s11433-023-2205-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Based on five di fferent ensembles of newly generated (2 +1)-flavor configurations with pion mass of approximately m p.(140310) MeV, we present a lattice analysis of hidden-charm and hidden-strange hexaquarks with the quark content uscd sc. 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. c . c 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.
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页数：8
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