V-completion by classicalization

Dvali, G; Giudice, GF; Gomez, C; Kehagias, A

dc.contributor.author	Dvali, G	en
dc.contributor.author	Giudice, GF	en
dc.contributor.author	Gomez, C	en
dc.contributor.author	Kehagias, A	en
dc.date.accessioned	2014-03-01T01:37:31Z
dc.date.available	2014-03-01T01:37:31Z
dc.date.issued	2011	en
dc.identifier.issn	1126-6708	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21540
dc.subject	Phenomenological Models	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	ENERGY SUPERSTRING COLLISIONS	en
dc.subject.other	STRING THEORY	en
dc.subject.other	GRAVITATION	en
dc.subject.other	MILLIMETER	en
dc.subject.other	DIMENSIONS	en
dc.subject.other	SPACETIME	en
dc.subject.other	MASS	en
dc.title	V-completion by classicalization	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/JHEP08(2011)108	en
heal.identifier.secondary	http://dx.doi.org/10.1007/JHEP08(2011)108	en
heal.identifier.secondary	108	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	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
heal.publisher	SPRINGER	en
heal.journalName	Journal of High Energy Physics	en
dc.identifier.doi	10.1007/JHEP08(2011)108	en
dc.identifier.isi	ISI:000294901200053	en
dc.identifier.volume	2011	en
dc.identifier.issue	8	en