Higgs boson phenomenology in a simple model with vector resonances

Castillo-Felisola, Oscar; Corral, Cristóbal; González, Marcela; Moreno, Gastón; Neill, Nicolás A.; Rojas, Felipe; Zamora, Jilberto; Zerwekh, Alfonso R.

doi:10.1140/epjc/s10052-013-2669-2

Cited by 14 publications

(19 citation statements)

References 40 publications

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“…Notice that in the quasi-degenerate case, resonances with masses as light as 2000 or 2500 GeV are allowed. This is in agreement with previous studies on vector resonances [6,7,13].…”

Section: Dijetssupporting

confidence: 94%

The Linear BESS model at the LHC

J¹,

Zerwekh²

2018

Nuclear Physics B

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In this work we consider the Linear BESS model at the LHC. This model can be seen as an adequate benchmark for exploring the phenomenological consequences of a composite Higgs sector since its particle content is the one we would expect in a realistic low energy description of modern (Technicolor inspired) dynamical electroweak symmetry breaking scenarios. Additionally, the model exhibits the property of decoupling, producing a good ultraviolet behavior. We focus on the limits on the masses of the new heavy vector particles imposed by direct resonance searches, recent measurements of the decay of the Higgs boson into two photons and the electroweak precision tests. We found that the model is capable to accommodate the existing experimental constrains provided that the spin-1 resonances are heavier than 3.4 TeV.

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“…Notice that in the quasi-degenerate case, resonances with masses as light as 2000 or 2500 GeV are allowed. This is in agreement with previous studies on vector resonances [6,7,13].…”

Section: Dijetssupporting

confidence: 94%

The Linear BESS model at the LHC

J¹,

Zerwekh²

2018

Nuclear Physics B

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“…Another widely studied possibility is to embed the composite Higgs in an effective SU (2) doublet [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] where its lightness would be guaranteed by the theory's particularities.…”

Section: Introductionmentioning

confidence: 99%

The limits on the strong Higgs sector parameters in the presence of new vector resonances

Gintner

Juran

2016

Eur. Phys. J. C

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In this paper, we investigate how the LHC data limit the Higgs-related couplings in the effective description of a strongly interacting extension of the Standard model. The Higgs boson is introduced as a scalar composite state and it is followed in the mass hierarchy by an SU (2) triplet of vector composites. The limits are calculated from the constraints obtained in the recent ATLAS+CMS combined analysis of the data from 2011 and 2012. We find that the data prefer the scenario where the Higgs couplings to the electroweak gauge bosons differ from its couplings to the vector triplet. We also investigate the unitarity limits of the studied effective model for the experimentally preferred values of the Higgs couplings. We find from the ππ → ππ scattering amplitudes that for the vector resonance masses between one and two TeV significant portions of the experimentally allowed regions are well below the unitarity limit. We also evaluate how the existing ATLAS and CMS Run-2 data restrict our model with the upper bounds on the resonance production cross section times its branching ratio for various decay channels. The masses in the range 1 TeV ≤ M ρ ≤ 2 TeV are not excluded in parts or even full parameter space of our theory.

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“…The upper limit of this interval is determined by the maximum center of mass energy available at CLIC while the lower limit makes us sure that the resonance has escaped detection at the LHC. 4,[11][12][13] We focus on the process e + e − → µ + µ − which, at leading order, is described only by the interchange of a photon, a Z-boson and a ρ 0 in the s-channel.…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, large values of g 2 , and vector resonances with masses above 2 TeV, make the new sector invisible at current LHC searches. [11][12][13] In the scalar sector, the spectrum is straightforward since no mass mixing term arise due to the Z 2 symmetry. Consequently, near the minimum of the potential, the scalar doublets can be parameterized as:…”

Section: Model Remindermentioning

confidence: 99%

A dark vector resonance at CLIC *

Callender

Zerwekh

2019

Chinese Phys. C

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One of the main problems in Particle Physics is to understand the origin and nature of Dark Matter. An exciting possibility is to consider that the Dark Matter belongs to a new complex but hidden sector. In this paper, we assume the existence of a strongly interacting dark sector consisting on a new scalar doublet and new vector resonances, in concordance with a model recently proposed by our group. 4 Since in a previous work it was found that it is very challenging to find the new vector resonances at the LHC, here we study the possibility of finding them at the a future Compact Linear Collider (CLIC) running at √ s = 3 TeV. We consider two distinct scenarios: when the non-standard scalars are heavy, the dark resonance is intense enough to make its discovery possible at CLIC when the resonance mass is in the range [2000, 3000] GeV. In the second scenario, when the non-standard scalars are light, the new vector boson is too broad to be recognized as a resonance and is not detectable except when the mass of the scalars is close to (but smaller than) a half of the resonance mass and the scale of the dark sector is high. In all the positive cases, less than a tenth of the maximum integrated luminosity is needed to reach the discovery level. Finally, we also comment about the mono-Z

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Higgs boson phenomenology in a simple model with vector resonances

Cited by 14 publications

References 40 publications

The Linear BESS model at the LHC

The Linear BESS model at the LHC

The limits on the strong Higgs sector parameters in the presence of new vector resonances

A dark vector resonance at CLIC *

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