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Título : The Higgs as a Portal to Plasmon-like Unparticle Excitations
Autor : Delgado, Antonio; Espinosa, José Ramón ; No Redondo, José Miguel ; Quirós, Mariano
Palabras clave : Beyond Standard Model
Higgs Physics
High Energy Physics - Phenomenology
Fecha de publicación : 19-feb-2008
Editor: Institute of Physics Publishing
Citación : arXiv:0802.2680v1 [hep-ph]
JHEP04(2008)028
http://dx.doi.org/10.1088/1126-6708/2008/04/028
Serie : IFT-UAM/CSIC-08-09
CERN-PH-TH/2008-033
UAB-FT-639
Resumen: A 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.
Descripción : 12 LaTeX pages, 2 figures.-- Published in: JHEP04(2008)028.-- Final full-text version available at: http://dx.doi.org/10.1088/1126-6708/2008/04/028.
URI : http://hdl.handle.net/10261/5537
DOI: 10.1088/1126-6708/2008/04/028
ISSN: 1029-8479
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