QCD, α_s, heavy quark mass and sum rules

作     者：Sturm, Christian 

作者机构：Universität Würzburg Institut für Theoretische Physik und Astrophysik Emil-Hilb-Weg 22 Würzburg D-97074 Germany 

出 版 物：《Nuclear and Particle Physics Proceedings》 (Nucl. Part. Phys. Proc.)

年 卷 期：2015年第260卷

页      面：121-124页

学科分类：07[理学] 070203[理学-原子与分子物理] 0827[工学-核科学与技术] 0702[理学-物理学] 

主　　题：Heavy quark mass Polarization function Strong coupling constant 

摘      要：We discuss the determination of the heavy charm- and bottom-quark masses from the sum rule approach as well as the determination of the strong coupling constant from the measurable R-ratio, hadronic τ-lepton decays and Z-boson decays. From theory side these determinations require the calculation of the vacuum polarization function in the low- and high-energy limit, respectively. © 2015 Elsevier B.V.