%0 Journal Article
%T Unparticles-Higgs Interplay
%A Delgado
%A Antonio
%A Espinosa
%A Jose R.
%A Quiros
%A Mariano
%J High Energy Physics - Phenomenology
%D 2007
%I 
%R 10.1088/1126-6708/2007/10/094
%X We show that scalar unparticles coupled to the Standard Model Higgs at the renormalizable level can have a dramatic impact in the breaking of the electroweak symmetry already at tree level. In particular one can get the proper electroweak scale without the need of a Higgs mass term in the Lagrangian. By studying the mixed unparticle-Higgs propagator and spectral function we also show how unparticles can shift the Higgs mass away from its Standard Model value, \lambda v^2, and influence other Higgs boson properties. Conversely, we study in some detail how electroweak symmetry breaking affects the unparticle sector by breaking its conformal symmetry and generating a mass gap. We also show that, for Higgs masses above that gap, unparticles can increase quite significantly the Higgs width.
%U http://arxiv.org/abs/0707.4309