Resummed corrections to the ρparameter due to a finite width of the top quark
arXiv:1003.6062 · doi:10.1103/PhysRevD.82.045020
Abstract
We perform an all-order calculation of the ρparameter in a simplified framework, where the top propagator can be calculated exactly. Special emphasis is placed on the question of gauge invariance and the treatment of non-perturbative cut-off effects.
21 pages, 4 figures, 1 table, typos corrected, final version published by Phys. Rev. D