Constrained Electroweak Chiral Lagrangian

Abstract

We update the uncertainty analysis on $S$ parameter of the electroweak chiral Lagrangian (EWCL) by including the LEP-II W pair production data. We find that experimental data still allow a positive $S^{EXP}(1\text{TeV})$.

Comments: 7 pages, 2 figures, talk presented at SCGT06 workshop, Nagoya, Japan (November 2006)