Hadron-Hadron interactions from N-f=2+1+1 lattice QCD: the rho-resonance

doi:10.1140/epja/s10050-020-00057-4

	Hadron-Hadron interactions from N-f=2+1+1 lattice QCD: the rho-resonance
	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
刊名	EUROPEAN PHYSICAL JOURNAL A
	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.
资助项目	Projekt DEAL ; Gauss Centre for Supercomputing e.V. ; DFG[CRC110]
WOS关键词	QUANTUM-FIELD THEORIES ; CHIRAL PERTURBATION-THEORY ; PI-PI ; ELASTIC-SCATTERING ; VOLUME DEPENDENCE ; ENERGY-SPECTRUM ; SYMMETRY ; MASSES ; RENORMALIZATION ; REPRESENTATIONS
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000517209400003
资助机构	Projekt DEAL ; Gauss Centre for Supercomputing e.V. ; DFG
内容类型	期刊论文
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.