The Higgs as a Portal to Plasmon-like Unparticle Excitations

Abstract

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.

arXiv comment12 LaTeX pages, 2 figures

References in corpus (11)

• Unparticle Physics
• Another Odd Thing About Unparticle Physics
• Graviscalars from higher-dimensional metrics and curvature-Higgs mixing
• Collider signals in unparticle physics
• Deconstruction of Unparticles
• Bounds on Unparticles from the Higgs Sector
• Unparticles-Higgs Interplay
• Unparticles: Scales and High Energy Probes
• A No-Lose Theorem for Higgs Searches at a Future Linear Collider
• Unparticle as a field with continuously distributed mass
• HEIDI and the unparticle

Cited by in corpus (19)

• The AdS/CFT/Unparticle Correspondence
• Unparticle & Higgs as Composites
• Alternatives to an Elementary Higgs
• Holographic Unhiggs
• The Unhiggs
• A Note on Unparticle Decays
• On the Decay of Unparticles
• Dark Sector Glueballs at the LHC
• Unparticle Realization Through Continuous Mass Scale Invariant Theories
• The Quantum Critical Higgs
• Unconstraining the Unhiggs
• Constraints on the Unhiggs Model from Top Quark Decay
• Invisible Higgs boson, continuous mass fields and unHiggs mechanism
• Continuum Superpartners from Supersymmetric Unparticles
• A Simple-Minded Unitarity Constraint and an Application to Unparticles
• Collider Phenomenology of a Gluino Continuum
• Quantum Critical Higgs: From AdS${}_5$ to Colliders
• Analytical Green's Functions for Continuum Spectra
• The effect of antisymmetric tensor unparticle mediation on the charged lepton electric dipole moment