Mass and width of a composite Higgs boson

Doff, A.; Natale, A. A.

doi:10.1016/j.physletb.2009.05.045

Cited by 16 publications

(25 citation statements)

References 33 publications

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“…the homogeneous BSE plus its normalization condition, and we observed in Ref. [8] that in walking (or quasiconformal) technicolor theories the normalization condition of the BSE may affect the result of Eq. (2).…”

Section: Introductionmentioning

confidence: 80%

“…[8,15], it should be written in terms of known standard model quantities and TC theory gauge group and fermion content. The way this is accomplished follows the work of Ref.…”

Section: Scalar Masses In Qcd and Tcmentioning

confidence: 99%

“…The way this is accomplished follows the work of Ref. [8]: m will be related to F Å (the technipion decay constant), and this last one will be related to the vacuum expectation value of the standard model through…”

Section: Scalar Masses In Qcd and Tcmentioning

confidence: 99%

“…(2), the curve in red was obtained from the effective action calculation of Ref. [8] and show the masses computed with the help of Eq. (27), and the values of masses indicated in blue are the ones computed in this work and given by Eq.…”

Section: Scalar Masses In Qcd and Tcmentioning

confidence: 99%

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Light composite Higgs boson from the normalized Bethe-Salpeter equation

2009

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Scalar composite boson masses have been computed in QCD and technicolor theories with the help of the homogeneous Bethe-Salpeter equation, resulting in a scalar mass that is twice the dynamically generated fermion or technifermion mass (m dyn ). We show that in the case of walking (or quasiconformal) technicolor theories, where the m dyn behavior with the momenta may be quite different from the one predicted by the standard operator product expansion, this result is incomplete and we must consider the effect of the normalization condition of the Bethe-Salpeter equation to determine the scalar masses. We compute the composite Higgs boson mass for several groups with technifermions in the fundamental and higher dimensional representations and comment about the experimental constraints on these theories, which indicate that models based on walking theories with fermions in the fundamental representation may, within the limitations of our approach, have masses quite near the actual direct exclusion limit.

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Section: Introductionmentioning

confidence: 80%

“…[8,15], it should be written in terms of known standard model quantities and TC theory gauge group and fermion content. The way this is accomplished follows the work of Ref.…”

Section: Scalar Masses In Qcd and Tcmentioning

confidence: 99%

Section: Scalar Masses In Qcd and Tcmentioning

confidence: 99%

Section: Scalar Masses In Qcd and Tcmentioning

confidence: 99%

See 2 more Smart Citations

Light composite Higgs boson from the normalized Bethe-Salpeter equation

2009

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“…The models are also economical since they require the introduction of a very small number of underlying elementary fields and can feature a light composite Higgs [99] [35,44,49]. Recent analysis further support this latter observation [50,51] for walking models. …”

Section: Introductionmentioning

confidence: 99%

Electroweak phase transition in ultraminimal technicolor

Järvinen

Ryttov²,

Sannino

2009

Phys. Rev. D

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We unveil the temperature-dependent electroweak phase transition in new extensions of the Standard Model in which the electroweak symmetry is spontaneously broken via strongly coupled, nearly-conformal dynamics achieved by the means of multiple matter representations. In particular, we focus on the low energy effective theory introduced to describe Ultra Minimal Walking Technicolor at the phase transition. Using the one-loop effective potential with ring improvement, we identify regions of parameter space which yield a strong first order transition.A striking feature of the model is the existence of a second phase transition associated to the electroweak-singlet sector. The interplay between these two transitions leads to an extremely rich phase diagram. * Electronic address: mjarvine@ifk.sdu.dk † Electronic address: ryttov@nbi.dk ‡ Electronic address: sannino@ifk.sdu.dk 1 arXiv:0903.3115v1 [hep-ph]

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Fundamental composite (Goldstone) Higgs dynamics

Cacciapaglia

Sannino

2014

J. High Energ. Phys.

197

301

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We provide a unified description, both at the effective and fundamental Lagrangian level, of models of composite Higgs dynamics where the Higgs itself can emerge, depending on the way the electroweak symmetry is embedded, either as a pseudo-Goldstone boson or as a massive excitation of the condensate. We show that, in general, these states mix with repercussions on the electroweak physics and phenomenology. Our results will help clarify the main differences, similarities, benefits and shortcomings of the different ways one can naturally realize a composite nature of the electroweak sector of the Standard Model. We will analyze the minimal underlying realization in terms of fundamental strongly coupled gauge theories supporting the flavor symmetry breaking pattern SU(4)/Sp(4) ∼ SO(6)/SO(5). The most minimal fundamental description consists of an SU(2) gauge theory with two Dirac fermions transforming according to the fundamental representation of the gauge group. This minimal choice enables us to use recent first principle lattice results to make the first predictions for the massive spectrum for models of composite (Goldstone) Higgs dynamics. These results are of the utmost relevance to guide searches of new physics at the Large Hadron Collider.

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Mass and width of a composite Higgs boson

Cited by 16 publications

References 33 publications

Light composite Higgs boson from the normalized Bethe-Salpeter equation

Light composite Higgs boson from the normalized Bethe-Salpeter equation

Electroweak phase transition in ultraminimal technicolor

Fundamental composite (Goldstone) Higgs dynamics

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