Gluons in charmoniumlike states
文献类型：期刊论文
| 作者 | Sun, Wei; Chen, Ying1; Sun, Peng2; Yang, Yi-Bo
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2021 |
| 卷号 | 103期号:9页码:94503 |
| ISSN号 | 2470-0010 |
| 关键词 | QCD |
| DOI | 10.1103/PhysRevD.103.094503 |
| 英文摘要 | The 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. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27334]  |
| 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.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：理论物理研究所
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