A lattice study of a chirally invariant Higgs-Yukawa model including a higher dimensional Φ6-term

We discuss the non-thermal phase structure of a chirally invariant Higgs-Yukawa model on the lattice in the presence of a higher dimensional Phi(6)-term. For the exploration of the phase diagram we use analytical, lattice perturbative calculations of the constraint effective potential as well as numerical simulations. We also present first results of the effects of the Phi(6)-term on the lower Higgs boson mass bounds. (C) 2015 The Authors. Published by Elsevier B.V.