A non-standard symmetry breaking sector may lead to derivative couplings of the Higgs boson and thereby to anomalous interactions with the electroweak gauge bosons. In the framework of gauge-invariant effective Lagrangians the resulting changes in Higgs boson production and decay mechanisms are related to anomalous triple vector boson couplings. Using low energy constraints on the dimension-six operators in the effective Lagrangian, we discuss the size of deviations from SM predictions which may be expected in Higgs boson production and decay rates. Large enhancements are allowed {\it e.g.} in the Z→Hγ and H→γγ partial decay widths, leading to Z→γγγ events at LEP.
@article{arxiv.hep-ph/9308347,
title = {Anomalous Higgs Boson Production and Decay},
author = {K. Hagiwara and R. Szalapski and D. Zeppenfeld},
journal= {arXiv preprint arXiv:hep-ph/9308347},
year = {2008}
}