.png){kind=icon}
返回
.png){kind=icon}
.png){kind=icon}
摘要
En 中文
A new Monte-Carlo based uncertainty analysis is introduced to quantitatively determine the predictive ability of QCD sum rules. A comprehensive analysis of ground state rho-meson and nucleon spectral properties is performed. Many of the findings contradict the conventional wisdom of both practitioners and skeptics alike. Associations between the phenomenological fit parameters are particularly interesting as they reveal how the sum rules resolve the spectral properties. The use of derivative sum rules for the determination of rho-meson spectral properties is shown to be a very unfavorable approach. Most prior nucleon sum rule analyses are based on a sum rule which is found to be invalid; the results are suspect, and should be reevaluated. The ''Ioffe formula,'' argued by many to qualitatively encapsulate a description of the nucleon mass in terms of the chiral symmetry breaking order parameter [(q) over bar q] is misleading at best. QCD sum rules are found to be self-consistent without contributions from direct instantons. This implies that instanton effects are adequately accounted for in the nonperturbative vacuum condensates. This in-depth examination of QCD sum rule self consistency paints a favorable picture for further quantitative refinements of the QCD sum rule approach. (C) 1997 Academic Press.
Keyword:
OPERATOR PRODUCT EXPANSION
CHIRAL SYMMETRY-BREAKING
BARYON MAGNETIC-MOMENTS
PROTON-DECAY
RESONANCE PHYSICS
NUCLEAR-MATTER
TAU-DECAYS
LATTICE
RENORMALONS
HADRONS
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3
论文数:
5.4K
被引数:
1.8W
机构
暂无机构信息
引用论文
Standardising English names for Australian bird subspecies as a conservation tool将澳大利亚鸟类亚种的英文名称标准化作为一种保护工具.png)
PREAI
.png){kind=icon}
分享.png){kind=icon}
收藏Jellyfish-shaped p-phenylenediamine functionalized graphene oxide-g-polyaniline fibers and their electrorheology.png)
Polymer
PolymerIF0
PREAI
分享收藏DNA Methylation Analysis of ChIP Products at Single Nucleotide Resolution by Pyrosequencing®通过Pyrosequencing®在单核苷酸分辨率水平对ChIP产物进行DNA甲基化分析
PREAI
分享收藏
查看更多内容