Comment on ``Next-to-next-to-leading order vacuum polarization function of heavy quark near threshold and sum rules for $b\bar{b}$ system'' and ``Next-to-next-to-leading order relation between $R(e^{+}{e}^{-}\to b\bar{b})$ and ${\Gamma }_{\mathrm{sl}}(b\to cl{\nu }_l)$ and precise determination of $|V_{cb}|$''

Abstract

The most recent recalculation of the two-loop correction to the static quark-antiquark potential gave the numerical value different from the previously known one. We comment on the effect this change produces on the numerical estimates of the bottom quark pole mass $m_b$, the strong coupling constant $\al_s$ and the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ obtained in our papers [1,2].

3 pages, LaTeX