Unparticle and Higgs boson as composites

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.015016· OSTI ID:21254744

Sannino, Francesco ^[1]; Zwicky, Roman ^[2]

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1. HEP Center, University of Southern Denmark, Campusvej 55, DK-5230 Odense M (Denmark)
2. School of Physics and Astronomy, University of Edinburgh, Scotland (United Kingdom)

We propose a generic framework in which the Higgs and the unparticle are both composite. The underlying theories are four-dimensional, asymptotically-free, nonsupersymmetric gauge theories with fermionic matter. We sketch a possible unification of these two sectors at a much higher scale resembling extended technicolor models. By construction our extensions are natural, meaning that there is no hierarchy problem. The coupling of the unparticle sector to the composite Higgs emerges as a four-Fermi operator. The bilinear unparticle operator near the electroweak scale has scaling dimension in the range 1<d{sub U}<3. We investigate, in various ways, the breaking of scale invariance induced by the electroweak scale resulting in an unparticle condensate. The latter acts as a natural infrared cutoff or hadronic scale. We give the low-energy effective theory valid near the electroweak scale. The unparticle-Higgs mixing is found to be suppressed within our framework.

• OSTI ID: 21254744
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONDENSATES
COUPLING
FERMIONS
FOUR-DIMENSIONAL CALCULATIONS
GAUGE INVARIANCE
HADRONS
HIGGS BOSONS
HIGGS MODEL
MIXING
SCALE INVARIANCE
WEINBERG-SALAM GAUGE MODEL