Bottom quark mass from Upsilon sum rules to O (alpha(3)(s))

We use the O(α3s) approximation of the heavy-quark vacuum polarization function in the threshold region to determine the bottom quark mass from nonrelativistic Υ sum rules. We find very good stability and convergence of the perturbative series for the bottom quark mass in MS¯¯¯¯¯ renormalization scheme. Our final result is m¯¯¯b(m¯¯¯b)=4.169±0.008th±0.002αs±0.002exp