IHEP OpenIR  > 理论物理室
Strangeness and charmness content of the nucleon from overlap fermions on 2+1-flavor domain-wall fermion configurations
xQCD Collaboration
2013
发表期刊PHYSICAL REVIEW D
卷号88期号:1
通讯作者Gong, M (reprint author), Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA.
摘要We present a calculation of the strangeness and charmness contents < N vertical bar(s) over bars vertical bar N > and < N vertical bar(c) over barc vertical bar N > of the nucleon from dynamical lattice QCD with 2 + 1 flavors. The calculation is performed with overlap valence quarks on 2 + 1-flavor domain-wall fermion gauge configurations. The configurations are generated by the RBC collaboration on a 24(3) x 64 lattice with sea-quark mass am(l) = 0.005, am(s) = 0.04, and inverse lattice spacing a(-1) = 1.73 GeV. Both actions have chiral symmetry which is essential in avoiding contamination due to the operator mixing with other flavors. The nucleon propagator and the quark loops are both computed with stochastic grid sources, while low-mode substitution and low-mode averaging methods are used respectively which substantially improve the signal-to-noise ratio. We obtain the strangeness matrix element fT(s) = m(s)< N vertical bar(s) over bars vertical bar N >/M-N = 0.0334(62), and the charmness content fT(c) = m(c)< N vertical bar(c) over barc vertical bar N >/M-N = 0.094(31) which is resolved from zero by 3 sigma precision for the first time.
关键词LATTICE QCD SIGMA-TERM QUARKS HEAVY MASS
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.88.014503
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000321275800005
引用统计
被引频次:47[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213559
专题理论物理室
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
xQCD Collaboration. Strangeness and charmness content of the nucleon from overlap fermions on 2+1-flavor domain-wall fermion configurations[J]. PHYSICAL REVIEW D,2013,88(1).
APA xQCD Collaboration.(2013).Strangeness and charmness content of the nucleon from overlap fermions on 2+1-flavor domain-wall fermion configurations.PHYSICAL REVIEW D,88(1).
MLA xQCD Collaboration."Strangeness and charmness content of the nucleon from overlap fermions on 2+1-flavor domain-wall fermion configurations".PHYSICAL REVIEW D 88.1(2013).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
1940.pdf(1090KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[xQCD Collaboration]的文章
百度学术
百度学术中相似的文章
[xQCD Collaboration]的文章
必应学术
必应学术中相似的文章
[xQCD Collaboration]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。