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Unparticles-Higgs Interplay · Around

2007

Unparticles-Higgs Interplay

Delgado, Antonio, Espinosa, Jose R., Quiros, Mariano

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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.

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J. R. Espinosa and J. F. Gunion, Phys. Rev. Lett. 82
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1999
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Then

J. Terning, G. Cacciapaglia and G. Marandella, work in progress presented at the Eötvös-Cornell 2007 Summer Workshop on Particle Physics
2007
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