scholarly journals One light composite Higgs boson facing electroweak precision tests

2009 ◽  
Vol 80 (5) ◽  
Author(s):  
Marc Gillioz
Keyword(s):  
Higgs Boson ◽  
Composite Higgs ◽  
Electroweak Precision

STRONGLY INTERACTING ELECTROWEAK THEORIES AND THEIR FIVE-DIMENSIONAL ANALOGS AT THE LHC

2009 ◽  
Vol 24 (01) ◽  
pp. 61-80
Author(s):  
ALEX POMAROL
Keyword(s):  
Higgs Boson ◽  
Hadron Collider ◽  
Field Theories ◽  
Hierarchy Problem ◽  
Strongly Coupled ◽  
Composite Higgs ◽  
Strongly Interacting ◽  
Coupled Field ◽  
Electroweak Precision ◽  
Elegant Solution

Strongly interacting theories of electroweak (EW) symmetry breaking provide an elegant solution to the hierarchy problem. In these models the EW symmetry can either be broken without a Higgs or by means of a composite Higgs boson. These scenarios have been recently investigated in the framework of five-dimensional warped models that, according to the AdS/CFT correspondence, have a four-dimensional holographic interpretation in terms of strongly coupled field theories. We describe the minimal Higgsless and composite Higgs model and show how they can successfully pass all the electroweak precision tests and solve the flavor problems. We explore the implications of these models at the LHC (Large Hadron Collider).

scholarly journals A 125 GeV composite Higgs boson versus flavour and electroweak precision tests

2013 ◽  
Vol 2013 (5) ◽  
Author(s):  
Riccardo Barbieri ◽  
Dario Buttazzo ◽  
Filippo Sala ◽  
David M. Straub ◽  
Andrea Tesi
Keyword(s):  
Higgs Boson ◽  
Composite Higgs ◽  
Electroweak Precision

scholarly journals TWO COMPOSITE HIGGS DOUBLETS: IS IT THE LOW ENERGY LIMIT OF A NATURAL STRONG ELECTROWEAK SYMMETRY BREAKING SECTOR?

2010 ◽  
Vol 25 (06) ◽  
pp. 423-429 ◽  
Author(s):  
ALFONSO R. ZERWEKH
Keyword(s):  
Higgs Boson ◽  
Symmetry Breaking ◽  
Top Quark ◽  
Gluon Fusion ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
Associated Production ◽  
Composite Higgs ◽  
Main Production ◽  
Model Scheme

In this paper, we propose an effective model scheme that describes the electroweak symmetry breaking sector by means of composite Higgs-like scalars, following the ideas of Minimal Walking Technicolor (MWT). We argue that, because of the general failure of Extended Technicolor (ETC) to explain the mass of the top quark, it is necessary to introduce two composite Higgs bosons: one of them originated by a MWT–ETC sector and the other produced by a Topcolor sector. We focus on the phenomenological differences between the light composite Higgs present in our model and the fundamental Higgs boson predicted by the Standard Model and their production at the LHC. We show that in this scheme the main production channel of the lighter Higgs boson is the associated production with a gauge boson and WW fusion but not the gluon–gluon fusion channel which is substantially suppressed.

scholarly journals Schwinger–Dyson approach and its application to generate a light composite scalar

2016 ◽  
Vol 31 (07) ◽  
pp. 1650024 ◽  
Author(s):  
A. Doff ◽  
A. A. Natale
Keyword(s):  
Higgs Boson ◽  
Characteristic Scale ◽  
Scalar Boson ◽  
Composite Boson ◽  
Self Energy ◽  
Composite Higgs ◽  
Strongly Interacting ◽  
Order Of Magnitude

We discuss the possibility of generating a light composite scalar boson, in a scenario that we may generically call Technicolor, or in any variation of a strongly interacting theory, where by light we mean a scalar composite mass about one order of magnitude below the characteristic scale of the strong theory. Instead of most of the studies about a composite Higgs boson, which are based on effective Lagrangians, we consider this problem in the framework of nonperturbative solutions of the fermionic Schwinger–Dyson and Bethe–Salpeter equations. We study a range of mechanisms proposed during the recent years to form such light composite boson, and verify that such possibility seems to be necessarily associated to a fermionic self-energy that decreases slowly with the momentum.

scholarly journals Mass and width of a composite Higgs boson

2009 ◽  
Vol 677 (5) ◽  
pp. 301-305 ◽  
Author(s):  
A. Doff ◽  
A.A. Natale
Keyword(s):  
Higgs Boson ◽  
Composite Higgs

scholarly journals Production of a composite Higgs boson

2011 ◽  
Vol 84 (4) ◽  
Author(s):  
Ian Low ◽  
Alessandro Vichi
Keyword(s):  
Higgs Boson ◽  
Composite Higgs

scholarly journals The minimal composite Higgs model and electroweak precision tests

2006 ◽  
Vol 742 (1-3) ◽  
pp. 59-85 ◽  
Author(s):  
Kaustubh Agashe ◽  
Roberto Contino
Keyword(s):  
Higgs Model ◽  
Composite Higgs ◽  
Electroweak Precision

scholarly journals Lattice study of the scalar and baryon spectra in many-flavor QCD

2017 ◽  
Vol 32 (35) ◽  
pp. 1747010
Author(s):  
Yasumichi Aoki ◽  
Tatsumi Aoyama ◽  
Ed Bennett ◽  
Masafumi Kurachi ◽  
Toshihide Maskawa ◽  
...  
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Decay Constant ◽  
Direct Detection ◽  
Bilinear Operator ◽  
Dark Matter Candidate ◽  
Baryon State ◽  
Composite Higgs ◽  
Attractive Candidate ◽  
Baryon Spectra

In the search for a composite Higgs boson in walking technicolor models, many flavor QCD, in particular with [Formula: see text], is an attractive candidate, and has been found to have a composite flavor-singlet scalar as light as the pion. Based on lattice simulations of this theory with the HISQ action, we will present our preliminary results on the scalar decay constant using the fermionic bilinear operator, and on the mass of the lightest baryon state which could be a dark matter candidate. Combining these two results, implications for dark matter direct detection are also discussed.

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