The Higgs as a Portal to Plasmon-like Unparticle Excitations

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dc.creatorDelgado, A.
dc.creatorEspinosa, J. R.
dc.creatorNo, J. M.
dc.creatorQuiros, M.
dc.date2008-02-19
dc.date.accessioned2026-07-07T11:56:11Z
dc.date.available2026-07-07T11:56:11Z
dc.descriptionA renormalizable coupling between the Higgs and a scalar unparticle operator O_U of non-integer dimension d_U<2 triggers, after electroweak symmetry breaking, an infrared divergent vacuum expectation value for O_U. Such IR divergence should be tamed before any phenomenological implications of the Higgs-unparticle interplay can be drawn. In this paper we present a novel mechanism to cure that IR divergence through (scale-invariant) unparticle self-interactions, which has properties qualitatively different from the mechanism considered previously. Besides finding a mass gap in the unparticle continuum we also find an unparticle pole reminiscent of a plasmon resonance. Such unparticle features could be explored experimentally through their mixing with the Higgs boson.
dc.description12 LaTeX pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0802.2680
dc.identifierhttp://arxiv.org/abs/0802.2680
dc.identifierJHEP0804:028,2008
dc.identifierdoi:10.1088/1126-6708/2008/04/028
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205495
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Higgs as a Portal to Plasmon-like Unparticle Excitations
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