V-completion by classicalization

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Title

V-completion by classicalization (EN)

Creator

Dvali, G (EN)

Kehagias, A (EN)

Giudice, GF (EN)

Gomez, C (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:37:31Z

2011 (EN)

Year

2011 (EN)

Description

We suggest a novel approach to UV-completion of a class of non-renormalizable theories, according to which the high-energy scattering amplitudes get unitarized by production of extended classical objects (classicalons), playing a role analogous to black holes, in the case of non-gravitational theories. The key property of classicalization is the existence of a classicalizer field that couples to energy-momentum sources. Such localized sources are excited in high-energy scattering processes and lead to the formation of classicalons. Two kinds of natural classicalizers are Nambu-Goldstone bosons (or, equivalently, longitudinal polarizations of massive gauge fields) and scalars coupled to energy-momentum type sources. Classicalization has interesting phenomenological applications for the UVcompletion of the StandardModel both with or without the Higgs. In the Higgless Standard Model the high-energy scattering amplitudes of longitudinal W-bosons self-unitarize via classicalization, without the help of any new weakly-coupled physics. Alternatively, in the presence of a Higgs boson, classicalization could explain the stabilization of the hierarchy. In both scenarios the high-energy scatterings are dominated by the formation of classicalons, which subsequently decay into many particle states. The experimental signatures at the LHC are quite distinctive, with sharp differences in the two cases. © 2011 SISSA. (EN)

Scientific field

Physics, Particles & Fields (EN)

Natural Sciences ▶ Physical sciences
Particles and Fields Physics (EN)

Subject

ENERGY SUPERSTRING COLLISIONS (EN)

MILLIMETER (EN)

DIMENSIONS (EN)

Phenomenological Models (EN)

MASS (EN)

GRAVITATION (EN)

SPACETIME (EN)

STRING THEORY (EN)