Bonn 2010 – scientific programme

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T: Fachverband Teilchenphysik

T 12: QCD (Theorie) III / Quantenfeldtheorie I

T 12.7: Talk

Wednesday, March 17, 2010, 15:30–15:45, HG XVI

All-orders leading top contributions to the ρ parameter — •Daniele Bettinelli and Jochum van der Bij — Albert-Ludwigs-Universitaet, Freiburg i.Br., Deutschland

We compute the leading top contributions to the ρ parameter to all orders in perturbation theory in the SU(N_F) × U(1) Electroweak model in the large N_F-limit. We show that the resulting perturbative expansion is not Borel summable.