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arXiv · 0707.4309

Unparticles-Higgs Interplay

Antonio Delgado·Jose R. Espinosa·Mariano Quiros
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Abstract

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, λv^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.

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Antonio Delgado, Jose R. Espinosa, Mariano Quiros. 2007-08-13. Unparticles-Higgs Interplay. https://doi.org/10.1088/1126-6708%2F2007%2F10%2F094

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