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Author
dc.contributor.author
Fodor, Z 
Author
dc.contributor.author
Holland, K 
Author
dc.contributor.author
Kuti, J 
Author
dc.contributor.author
Nogradi, D 
Author
dc.contributor.author
Schroeder, C 
Author
dc.contributor.author
Wong, CH 
Availability Date
dc.date.accessioned
2020-04-07T08:55:52Z
Availability Date
dc.date.available
2020-04-07T08:55:52Z
Release
dc.date.issued
2012
uri
dc.identifier.uri
http://hdl.handle.net/10831/43238
Abstract
dc.description.abstract
New results are reported from large scale lattice simulations of a frequently discussed strongly interacting gauge theory with a fermion flavor doublet in the two-index symmetric (sextet) representation of the SU(3) color gauge group. We find that the chiral condensate and the mass spectrum of the sextet model are consistent with chiral symmetry breaking in the limit of vanishing fermion mass. In contrast, sextet fermion mass deformations of spectral properties are not consistent with leading conformal scaling behavior near the critical surface of a conformal theory. A recent paper could not resolve the conformal fixed point of the gauge coupling from the slowly walking scenario of a very small nearly vanishing beta-function (DeGrand et al. [3]). It is argued that overall consistency with our new results is resolved if the sextet model is close to the conformal window, staying outside with a very small non-vanishing beta-function. The model would exhibit then the simplest composite Higgs mechanism leaving open the possibility of a light scalar state with quantum numbers of the Higgs impostor. It would emerge as the pseudo-Goldstone dilaton state from spontaneous symmetry breaking of scale invariance. We will argue that even without association with the dilaton, the scalar Higgs-like state can be light very close to the conformal window. A new Higgs project of sextet lattice simulations is outlined to resolve these important questions. (c) 2012 Elsevier B.V. All rights reserved.
Language
dc.language
Angol
Title
dc.title
Can the nearly conformal sextet gauge model hide the Higgs impostor?
Type
dc.type
folyóiratcikk
Date Change
dc.date.updated
2019-07-17T07:44:14Z
Scope
dc.format.page
657-666
Doi ID
dc.identifier.doi
10.1016/j.physletb.2012.10.079
Wos ID
dc.identifier.wos
000312687700055
ID Scopus
dc.identifier.scopus
84869886616
MTMT ID
dc.identifier.mtmt
2368752
Issue Number
dc.identifier.issue
2
abbreviated journal
dc.identifier.jabbrev
PHYS LETT B
Journal
dc.identifier.jtitle
PHYSICS LETTERS B
Volume Number
dc.identifier.volume
718
Release Date
dc.description.issuedate
2012
department of Author
dc.contributor.institution
MTA-ELTE Elméleti Fizikai Kutatócsoport
department of Author
dc.contributor.institution
MTA Határon Túli Magyarok Titkársága
department of Author
dc.contributor.institution
MTA-ELTE Lendület Rácstérelméleti Kutatócsoport
department of Author
dc.contributor.institution
Elméleti Fizikai Tanszék
Author institution
dc.contributor.department
Elméleti Fizikai Tanszék
Author institution
dc.contributor.department
Elméleti Fizikai Tanszék


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Can the nearly conformal sextet gauge model hide the Higgs impostor?
 

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