CERN LHC signatures of new gauge bosons in the minimal Higgsless model

He, H.; Kuang, Yu Ping; Qi, Yong; Zhang, Bin; Belyaev, A.; Chivukula, R. Sekhar; Christensen, Neil D.; Pukhov, A.; Simmons, Elizabeth H.

doi:10.1103/physrevd.78.031701

Cited by 75 publications

(39 citation statements)

References 26 publications

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“…After the disgrace of technicolor models as a result of the LEP precision measurements, there has been revival of interest in strong electroweak symmetry breaking models thanks to their duality with perturbative models built with compactified or deconstructed extra dimensions. The LHC (and ILC) phenomenology of these Higgsless models gave rise to many studies [40][41][42][43][44][45]. In the past few years, there has been some interest JHEP11(2011)028 on more minimal models [22,32,46] inspired by the QCD chiral Lagrangian which are also reminiscent of the original BESS models [31].…”

Section: Phenomenology Of Resonancesmentioning

confidence: 99%

If no Higgs then what?

Falkowski

Grojean

Kaminska

et al. 2011

J. High Energ. Phys.

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In the absence of a Higgs boson, the perturbative description of the Standard Model ceases to make sense above a TeV. Heavy spin-1 fields coupled to W and Z bosons can extend the validity of the theory up to higher scales. We carefully identify regions of parameter space where a minimal addition -a single spin-1 SU(2) custodial -triplet resonance -allows one to retain perturbative control in all channels. Elastic scattering of longitudinal W and Z bosons alone seems to permit a very large cut-off beyond the Naive Dimensional Analysis expectation. We find however that including scattering of the spin-1 resonances then leads to an earlier onset of strong coupling. Most importantly for LHC searches, we define a self-consistent set-up with a well-defined range of validity without recourse to unitarization schemes whose physical meaning is obscure. We discuss the LHC phenomenology and the discovery reach for these electroweak resonances and mention the possibility of a nightmare scenario with no Higgs nor resonance within the LHC reach. Finally, we discuss the effects of parity breaking in the heavy resonance sector which reduces the contributions to the S parameter.

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Section: Phenomenology Of Resonancesmentioning

confidence: 99%

If no Higgs then what?

Falkowski

Grojean

Kaminska

et al. 2011

J. High Energ. Phys.

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“…Besides the cross sections evaluated for the cuts above we have evaluated another set of the cross sections for an additional cut to select the vector boson fusion process by requiring each jet to be quite energetic with E j > 300 GeV as well as a large rapidity gap between the two jets |∆η jj | > 4 (see e.g. [9] for detailed motivation of this choice). In table 2 we present the results with and without the vector boson fusion cut.…”

Section: Jhep05(2013)005mentioning

confidence: 99%

Multiple Higgs and vector boson production beyond the Standard Model

Belyaev

Oliveira

Rosenfeld

et al. 2013

J. High Energ. Phys.

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If the electroweak symmetry breaking is originated from a strongly coupled sector, as for instance in composite Higgs models, the Higgs boson couplings can deviate from their Standard Model values. In such cases, at sufficiently high energies there could occur an onset of multiple Higgs boson and longitudinally polarised electroweak gauge boson (V L ) production. We study the sensitivity to anomalous Higgs couplings in inelastic processes with 3 and 4 particles (either Higgs bosons or V L 's) in the final state. We show that, due to the more severe cancellations in the corresponding amplitudes as compared to the usual 2 → 2 processes, large enhancements with respect to the Standard Model can arise even for small modifications of the Higgs couplings. In particular, we find that triple Higgs production provides the best multiparticle channel to look for these deviations. We briefly explore the consequences of multiparticle production at the LHC.

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“…Moreover, there are other models in which the W couplings to SM fermions are suppressed, giving rise to a fermiophobic W with an enhanced coupling to W and Z bosons [21] [22]. As another interpretation of WZ decay is technicolor modeling on QCD with no elementary scalar particles.…”

Section: Trilepton Signaturesmentioning

confidence: 99%