A two-loop application of the threshold expansion: the bottom quark mass from $b\bar{b}$ production

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49153We use the threshold expansion and non-relativistic effective theory to determine the bottom quark mass from moments of the $b\bar{b}$ production cross section at next-to-next-to-leading order in the (resummed) perturbative expansion, and including a summation of logarithms. For the $\bar{\rm MS}$ mass $\bar{m}_b$, we find $\bar{m}_b(\bar{m}_b)=(4.26\pm 0.12)$ GeV.12 pages, LaTeX, 2 figures. Talk presented at RADCOR98, Barcelona, September, 1998. The numerical analysis is superseded by hep-ph/9906475. Provides more details on the calculationHigh Energy Physics - PhenomenologyA two-loop application of the threshold expansion: the bottom quark mass from $b\bar{b}$ productiontext