Novel method to reliably determine the QCD coupling from R uds measurements and its effects to muon g − 2 and α M Z 2 $$ \alpha \left({M}_Z^2\right) $$ within the tau-charm energy region

Novel method to reliably determine the QCD coupling from R uds measurements and its effects to muon g − 2 and α M Z 2 $$ \alpha \left({M}_Z^2\right) $$ within the tau-charm energy region

Abstract We present a novel method for precisely determining the QCD running coupling from R uds measurements in electron-positron annihilation. When calculating the fixed-order perturbative QCD (pQCD) approximant of R uds, its effective coupling constant α s Q ∗ 2 $$ {\alpha}_s\left({Q}_{\ast}^2\ri...

Full description

Bibliographic Details
Main Authors: Jian-Ming Shen, Bing-Hai Qin, Jiang Yan, Sheng-Quan Wang, Xing-Gang Wu
Format: Article
Language:English
Published: SpringerOpen 2023-07-01
Series:Journal of High Energy Physics
Subjects:
Specific QCD Phenomenology
The Strong Coupling
Higher-Order Perturbative Calculations
Online Access:https://doi.org/10.1007/JHEP07(2023)109

Internet

https://doi.org/10.1007/JHEP07(2023)109

Similar Items