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Article

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

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,...

Jian-Ming Shen, Bing-Hai Qin, Jiang Yan, Sheng-Quan Wang… in Journal of High Energy Physics (2023)