Strong Coupling Constant at Low Q2.

Deur, A.

Technical Information Center Oak Ridge Tennessee

关键词: Coupling constants;    Duality;    Quantum chromodynamics;    Quark model;    Sum rules;   

RP-ID  :  DE2005850197

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We extract an effective strong coupling constant using low-Q(sup 2) data and sum rules. Its behavior is established over the full Q(sup 2)-range and is compared to calculations based on lattice quantum chromodynamics (QCD), Schwinger-Dyson equations and a quark model. Although the connection between all these quantities is not known yet, the results are surprisingly alike. Such a similitude may be related to quark-hadron duality.