Anomalous couplings in the Higgs-strahlung process

Abstract

The angular distributions in the Higgs-strahlung process $e^{+}{e}^{-}\to HZ\to H\bar{f}f$ are uniquely determined in the Standard Model. We study how these predictions are modified if non-standard couplings are present in the $ZZH$ vertex, as well as lepton-boson contact terms. We restrict ourselves to the set of operators which are singlets under standard $S{U}_3\times S{U}_2\times U_1$ transformations, CP conserving, dimension 6, helicity conserving, and custodial $S{U}_2$ conserving.

Comments: 8 pages, LaTeX2e, 5 figures