Renormalization group improved pQCD prediction for ${\rm Y}(1S)$ leptonic decay

Jian-Ming Shen, Xing-Gang Wu, Hong-Hao Ma +2

The complete next-to-next-to-next-to-leading order short-distance and bound-state QCD corrections to ${\rm Y}(1S)$ leptonic decay rate $\Gamma ({\rm Y}(1S)\to {\ell }^{+}{\ell }^{-})$ has been finished by Ben…