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Topological susceptibility and eta ' meson mass from N-f=2 lattice QCD at the physical point

文献类型:期刊论文

作者Ottnad, K.4,5,6; Liu, L.1; Kostrzewa, B.5,6; Werner, M.5,6; Jost, C.5,6; Helmes, C.5,6; Dimopoulos, P.2; Knippschild, B.5,6; Wenger, U.3; Urbach, C.5,6
刊名PHYSICAL REVIEW D
出版日期2019-02-28
卷号99期号:3页码:13
ISSN号2470-0010
DOI10.1103/PhysRevD.99.034511
通讯作者Dimopoulos, P.()
英文摘要In this paper we explore the computation of topological susceptibility and eta' meson mass in N-f = 2 flavor QCD using lattice techniques with a physical value of the pion mass as well as larger pion mass values. We observe that the physical point can be reached without a significant increase in the statistical noise. The mass of the eta' meson can be obtained from both fermionic two point functions and topological charge density correlation functions, giving compatible results. With the pion mass dependence of the eta' mass being flat we arrive at M eta' = 772(18) MeV without an explicit continuum limit. For the topological susceptibility we observe a linear dependence on M-2 pi, however, with an additional constant stemming from lattice artifacts.
WOS关键词SPECTRUM
资助项目DFG[CRC110] ; Swiss National Science Foundation
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000459909200007
出版者AMER PHYSICAL SOC
资助机构DFG ; Swiss National Science Foundation
源URL[http://119.78.100.186/handle/113462/134538]  
专题中国科学院近代物理研究所
通讯作者Dimopoulos, P.
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
2.Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
3.Univ Bern, Inst Theoret Phys, Albert Einstein Ctr Fundamental Phys, CH-3012 Bern, Switzerland
4.Johannes Gutenberg Univ Mainz, Inst Kernphys, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany
5.Rheinische Friedrich Wilhelms Univ Bonn, HISKP, D-53115 Bonn, Germany
6.Rheinische Friedrich Wilhelms Univ Bonn, BCTP, D-53115 Bonn, Germany
推荐引用方式
GB/T 7714
Ottnad, K.,Liu, L.,Kostrzewa, B.,et al. Topological susceptibility and eta ' meson mass from N-f=2 lattice QCD at the physical point[J]. PHYSICAL REVIEW D,2019,99(3):13.
APA Ottnad, K..,Liu, L..,Kostrzewa, B..,Werner, M..,Jost, C..,...&Petschlies, M..(2019).Topological susceptibility and eta ' meson mass from N-f=2 lattice QCD at the physical point.PHYSICAL REVIEW D,99(3),13.
MLA Ottnad, K.,et al."Topological susceptibility and eta ' meson mass from N-f=2 lattice QCD at the physical point".PHYSICAL REVIEW D 99.3(2019):13.

入库方式: OAI收割

来源:近代物理研究所

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