Scattering of two and three physical pions at maximal isospin from lattice QCD Extended Twisted Mass Collaboration
文献类型：期刊论文
| 作者 | Fischer, Matthias5,6; Kostrzewa, Bartosz2; Liu, Liuming1,7 ; Romero-Lopez, Fernando3,4; Ueding, Martin5,6; Urbach, Carsten5,6
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| 刊名 | EUROPEAN PHYSICAL JOURNAL C
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| 出版日期 | 2021-05-01 |
| 卷号 | 81期号:5页码:19 |
| ISSN号 | 1434-6044 |
| DOI | 10.1140/epjc/s10052-021-09206-5 |
| 通讯作者 | Romero-Lopez, Fernando(fernando.romero@uv.es) |
| 英文摘要 | We present the first direct N-f = 2 lattice QCD computation of two- and three-pi(+) scattering quantities that includes an ensemble at the physical point. We study the quark mass dependence of the two-pion phase shift, and the three-particle interaction parameters. We also compare to phenomenology and chiral perturbation theory (ChPT). In the two-particle sector, we observe good agreement to the phenomenological fits in s- and d-wave, and obtain M(pi)a(0) = -0.0481(86) at the physical point from a direct computation. In the three-particle sector, we observe reasonable agreement at threshold to the leading order chiral expansion, i.e. a mildly attractive three-particle contact term. In contrast, we observe that the energy-dependent part of the three-particle quasilocal scattering quantity is not well described by leading order ChPT. |
| WOS关键词 | QUANTUM-FIELD THEORIES ; PI SCATTERING ; RESONANCE ; AMPLITUDES ; SPECTRUM ; STATES |
| 资助项目 | DFG[CRC110] ; European projects[H2020-MSCA-ITN-2015/674896-ELUSIVES] ; European projects[H2020-MSCA-RISE-2015/690575-InvisiblesPlus] ; Spanish project[FPA2017-85985-P] ; Generalitat Valenciana[PROMETEO/2019/083] ; EU[713673] ; La Caixa Foundation[100010434] ; La Caixa Foundation[LCF/BQ/IN17/11620044] ; Gauss Centre for Supercomputing e.V. |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000680425500003 |
| 资助机构 | DFG ; European projects ; Spanish project ; Generalitat Valenciana ; EU ; La Caixa Foundation ; Gauss Centre for Supercomputing e.V. |
| 源URL | [http://119.78.100.186/handle/113462/136771]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Romero-Lopez, Fernando |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Bonn, High Performance Comp & Analyt Lab, D-53115 Bonn, Germany 3.Univ Valencia, Inst Fis Corpuscular, Paterna 46980, Spain 4.CSIC, Paterna 46980, Spain 5.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 6.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fischer, Matthias,Kostrzewa, Bartosz,Liu, Liuming,et al. Scattering of two and three physical pions at maximal isospin from lattice QCD Extended Twisted Mass Collaboration[J]. EUROPEAN PHYSICAL JOURNAL C,2021,81(5):19. |
| APA | Fischer, Matthias,Kostrzewa, Bartosz,Liu, Liuming,Romero-Lopez, Fernando,Ueding, Martin,&Urbach, Carsten.(2021).Scattering of two and three physical pions at maximal isospin from lattice QCD Extended Twisted Mass Collaboration.EUROPEAN PHYSICAL JOURNAL C,81(5),19. |
| MLA | Fischer, Matthias,et al."Scattering of two and three physical pions at maximal isospin from lattice QCD Extended Twisted Mass Collaboration".EUROPEAN PHYSICAL JOURNAL C 81.5(2021):19. |
入库方式： OAI收割
来源：近代物理研究所
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