Unparticles-Higgs interplay

Antonio Delgado, José R. Espinosa, Mariano Quirós

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Resum

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, 2λv2, 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. © SISSA 2007.
Idioma originalEnglish
Número d’article094
RevistaJournal of High Energy Physics
Volum2007
Número10
DOIs
Estat de la publicacióPublicada - 1 d’oct. 2007

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