Hadron-Hadron interactions from N-f=2+1+1 lattice QCD: the rho-resonance
文献类型：期刊论文
| 作者 | Werner, M.1,2; Ueding, M.1,2; Helmes, C.1,2; Jost, C.1,2; Knippschild, B.1,2; Kostrzewa, B.1,2; Liu, C.3,4,5 ; Liu, L.6; Metsch, B.1,2; Petschlies, M.1,2
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| 刊名 | EUROPEAN PHYSICAL JOURNAL A
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| 出版日期 | 2020-02-19 |
| 卷号 | 56期号:2页码:20 |
| ISSN号 | 1434-6001 |
| DOI | 10.1140/epja/s10050-020-00057-4 |
| 通讯作者 | Urbach, C.(urbach@hiskp.uni-bonn.de) |
| 英文摘要 | We present a lattice QCD investigation of the rho-meson with N-f = 2 + 1 + 1 dynamical quark flavours for the first time. The calculation is performed based on gauge configuration ensembles produced by the ETM Collaboration with three lattice spacing values and pion masses ranging from 230 to 500 MeV. Applying the Luscher method phase-shift curves are determined for all ensembles separately. Assuming a Breit-Wigner form, the rho-meson mass and width are determined by a fit to these phase-shift curves. Mass and width combined are then extrapolated to the chiral limit, while lattice artefacts are not detectable within our statistical uncertainties. For the rho-meson mass extrapolated to the physical point we find good agreement with experiment. The corresponding decay width differs by about two standard deviations from the experimental value. |
| WOS关键词 | QUANTUM-FIELD THEORIES ; CHIRAL PERTURBATION-THEORY ; PI-PI ; ELASTIC-SCATTERING ; VOLUME DEPENDENCE ; ENERGY-SPECTRUM ; SYMMETRY ; MASSES ; RENORMALIZATION ; REPRESENTATIONS |
| 资助项目 | Projekt DEAL ; Gauss Centre for Supercomputing e.V. ; DFG[CRC110] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000517209400003 |
| 出版者 | SPRINGER |
| 资助机构 | Projekt DEAL ; Gauss Centre for Supercomputing e.V. ; DFG |
| 源URL | [http://119.78.100.186/handle/113462/141027]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Urbach, C. |
| 作者单位 | 1.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, Bonn, Germany 2.Univ Bonn, Bethe Ctr Theoret Phys, Bonn, Germany 3.Peking Univ, Sch Phys, Beijing, Peoples R China 4.Peking Univ, Ctr High Energy Phys, Beijing, Peoples R China 5.Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Werner, M.,Ueding, M.,Helmes, C.,et al. Hadron-Hadron interactions from N-f=2+1+1 lattice QCD: the rho-resonance[J]. EUROPEAN PHYSICAL JOURNAL A,2020,56(2):20. |
| APA | Werner, M..,Ueding, M..,Helmes, C..,Jost, C..,Knippschild, B..,...&Urbach, C..(2020).Hadron-Hadron interactions from N-f=2+1+1 lattice QCD: the rho-resonance.EUROPEAN PHYSICAL JOURNAL A,56(2),20. |
| MLA | Werner, M.,et al."Hadron-Hadron interactions from N-f=2+1+1 lattice QCD: the rho-resonance".EUROPEAN PHYSICAL JOURNAL A 56.2(2020):20. |
入库方式： OAI收割
来源：近代物理研究所
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