We consider a general effective Lagrangian for couplings of a Higgs boson to the top-quark to dimension-six operators including CP violation effects. Constraints on some of them are derived from the Z→bbˉ data. We study the process e+e−→ttˉH to probe the non-standard couplings. We find that at a linear collider with a c. m. energy s∼0.5−1.5 TeV and a high luminosity of 10-1000 fb−1, these non-standard couplings may be sensitively probed.
@article{arxiv.hep-ph/9908236,
title = {$e^+e^- \to t \bar t H$ with Non-standard Higgs Boson Couplings},
author = {T. Han and T. Huang and Z. -H. Lin and J. -X. Wang and X. Zhang},
journal= {arXiv preprint arXiv:hep-ph/9908236},
year = {2009}
}