Spectroscopy and decays of the fully-heavy tetraquarks

doi:10.1140/epjc/s10052-018-6073-9

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	Spectroscopy and decays of the fully-heavy tetraquarks
	Zou, BS; Ferretti, J ; Guo, FK ; Santopinto, E 1; Anwar, MN
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018
卷号	78 期号:8 页码:647
关键词	BOUND-STATES QUANTUM CHROMODYNAMICS MASS INEQUALITIES MULTIQUARK HADRONS HIDDEN-CHARM QUARK-MODEL SYSTEMS QCD MESONS ANNIHILATION
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-018-6073-9
英文摘要	We discuss the possible existence of the fullyheavy tetraquarks. We calculate the ground-state energy of the bb (b) over bar(b) over bar bound state, where b stands for the bottom quark, in a nonrelativistic effective field theory framework with onegluon-exchange (OGE) color Coulomb interaction, and in a relativized diquark model characterized by OGE plus a confining potential. Our analysis advocates the existence of uni-flavor heavy four-quark bound states. The ground state bbbb tetraquark mass is predicted to be (18.72 +/- 0.02) GeV. Mass inequality relations among the lowest QQ (Q) over bar(Q) over bar states, where Q is an element of (c, b), and the corresponding heavy quarkonia are presented, which give the upper limit on the mass of ground state QQ (Q) over bar(Q) over bar. The possible decays of the lowest bb (b) over barb are highlighted, which might provide useful references in the search for them in ongoing LHC experiments, and its width is estimated to be a few tens of MeV.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22837]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.INFN, Sez Genova, Via Dodecaneso 33, I-16146 Genoa, Italy 3.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 4.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zou, BS,Ferretti, J,Guo, FK,et al. Spectroscopy and decays of the fully-heavy tetraquarks[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(8):647.
APA	Zou, BS,Ferretti, J,Guo, FK,Santopinto, E,&Anwar, MN.(2018).Spectroscopy and decays of the fully-heavy tetraquarks.EUROPEAN PHYSICAL JOURNAL C,78(8),647.
MLA	Zou, BS,et al."Spectroscopy and decays of the fully-heavy tetraquarks".EUROPEAN PHYSICAL JOURNAL C 78.8(2018):647.