The oblique parameters in multi-Higgs-doublet models

We present general expressions for the oblique parameters S, T, U, V, W, and X in the SU(2) x U(1) electroweak model with an arbitrary number of scalar SU(2) doublets, with hypercharge +/- 1/2, and an arbitrary number of scalar SU(2) singlets. (c) 2008 Elsevier B.V. All rights reserved.