ITP OpenIR  > SCI期刊论文
Sun, Wei; Chen, Ying1; Sun, Peng2; Yang, Yi-Bo
Gluons in charmoniumlike states
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordQCD
AbstractThe mass components of charmoniumlike states are investigated through the decomposition of QCD energy-momentum tensor (EMT) on lattice. The quark mass contribution < H-m > and the momentum fraction < x > of valence charm quark and antiquark are calculated for conventional 1S, 1P, 1D charmonia and the exotic 1(-+) charmoniumlike state, based on the N-f = 2 + 1 gauge configurations generated by the RBC/UKQCD collaboration. It is found that < H-m > is close to each other and around 2.0 to 2.2 GeV for these states, which implies that the mass splittings among these states come almost from the gluon contribution of QCD trace anomaly. The < x > of the 1(-+) state is only around 0.55, while that in conventional charmonia is around 0.7 to 0.8. This difference manifests that the proportion of light quarks and gluons in the 1(-+) charmoniumlike state is significantly larger than conventional states.
2021
ISSN2470-0010
Volume103Issue:9Pages:94503
Cooperation Status国内
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.103.094503
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27334
CollectionSCI期刊论文
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China
3.Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China
4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
5.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
6.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Sun, Wei,Chen, Ying,Sun, Peng,et al. Gluons in charmoniumlike states[J]. PHYSICAL REVIEW D,2021,103(9):94503.
APA Sun, Wei,Chen, Ying,Sun, Peng,&Yang, Yi-Bo.(2021).Gluons in charmoniumlike states.PHYSICAL REVIEW D,103(9),94503.
MLA Sun, Wei,et al."Gluons in charmoniumlike states".PHYSICAL REVIEW D 103.9(2021):94503.
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