The global Higgs as a signal for compositeness at the LHC

Fichet, S.; Gersdorff, Gero von; Pontón, Eduardo; Rosenfeld, R.

doi:10.1007/jhep01(2017)012

Cited by 13 publications

(18 citation statements)

References 66 publications

(162 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the scalar is not too heavy, it will be possible to produce it and look for this decay channel at the LHC. This type of signal has been much studied and searched for [68,[92][93][94][95][96]. However, if the scalar is too heavy it will not be possible to produce it at the LHC.…”

Section: Top Partner Production Channelsmentioning

confidence: 99%

Loop induced single top partner production and decay at the LHC

Kim

Lewis

2018

J. High Energ. Phys.

View full text Add to dashboard Cite

Most searches for top partners, T , are concerned with top partner pair production. However, as these bounds become increasingly stringent, the LHC energy will saturate and single top partner production will become more important. In this paper we study the novel signature of the top partner produced in association with the SM top, pp → T t + tT , in a model where the Standard Model (SM) is extended by a vector-like SU (2) L singlet fermion top partner and a real, SM gauge singlet scalar, S. In this model, pp → T t + tT production is possible through loops mediated by the scalar singlet. We find that, with reasonable coupling strengths, the production rate of this channel can dominate top partner pair production at top partner masses of m T 1.5 TeV. In addition, this model allows for the exotic decay modes T → tg, T → tγ, and T → tS. In much of the parameter space the loop induced decay T → tg dominates and the top partner is quite long lived. New search strategies are necessary to cover these decay modes. We project the the sensitivity of the high luminosity LHC to pp → T t + tT via a realistic collider study. We find with 3 ab −1 , the LHC is sensitive to this process for masses m T 2 TeV. In addition, we provide appendices detailing the renormalization of this model.

show abstract

Section: Top Partner Production Channelsmentioning

confidence: 99%

Loop induced single top partner production and decay at the LHC

Kim

Lewis

2018

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…[15] the procedure and first steps to obtain the non-linear effective Lagrangian were developed. Later work has impact on interesting phenomenological consequences [17,18] and other aspects [19,20]. That minimal sigma model allows one to gain intuition on the dependence on the ultraviolet (UV) completion scale: it can be considered either as an ultimate model made out of elementary fields, or as a renormalizable version of a deeper dynamics, much as the linear σ model [21] is to QCD.…”

Section: Introductionmentioning

confidence: 99%

“…1 The implications on low-energy precision data and the expected signals at LHC have also been developed in Refs. [15,17,18], leading to a lower bound m σ 550 GeV and interesting σ decay channels into gauge bosons and tt pairs at LHC.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The linear–non-linear frontier for the Goldstone Higgs

et al. 2016

View full text Add to dashboard Cite

The minimal SO(5)/SO(4) σ -model is used as a template for the ultraviolet completion of scenarios in which the Higgs particle is a low-energy remnant of some highenergy dynamics, enjoying a (pseudo) Nambu-Goldstoneboson ancestry. Varying the σ mass allows one to sweep from the perturbative regime to the customary non-linear implementations. The low-energy benchmark effective non-linear Lagrangian for bosons and fermions is obtained, determining as well the operator coefficients including linear corrections. At first order in the latter, three effective bosonic operators emerge which are independent of the explicit soft breaking assumed. The Higgs couplings to vector bosons and fermions turn out to be quite universal: the linear corrections are proportional to the explicit symmetry-breaking parameters. Furthermore, we define an effective Yukawa operator which allows a simple parametrization and comparison of different heavy-fermion ultraviolet completions. In addition, one particular fermionic completion is explored in detail, obtaining the corresponding leading low-energy fermionic operators.

show abstract

“…A possibility of twin Higgs radial mode is also discussed in[2,5,16,36]. Moreover, see[37,38] for the phenomenology of the radial mode in composite Higgs model.…”

mentioning

confidence: 99%

Heavy Higgs of the Twin Higgs models

Ahmed

2018

J. High Energ. Phys.

View full text Add to dashboard Cite

Twin Higgs models are the prime illustration of neutral naturalness, where the new particles of the twin sector, gauge singlets of the Standard Model (SM), ameliorate the little hierarchy problem. In this work, we analyse phenomenological implications of the heavy Higgs of the Mirror Twin Higgs and Fraternal Twin Higgs models, when electroweak symmetry breaking is linearly realized. The most general structure of twin Higgs symmetry breaking, including explicit soft and hard breaking terms in the scalar potential, is employed. The direct and indirect searches at the LHC are used to probe the parameter space of Twin Higgs models through mixing of the heavy Higgs with the SM Higgs and decays of the heavy Higgs to the SM states. Moreover, for the Fraternal Twin Higgs, we study the production and decays of twin glueball and bottomonium states to the SM light fermions, which have interesting signatures involving displaced vertices and are potentially observable at the colliders.

show abstract

The global Higgs as a signal for compositeness at the LHC

Cited by 13 publications

References 66 publications

Loop induced single top partner production and decay at the LHC

Loop induced single top partner production and decay at the LHC

The linear–non-linear frontier for the Goldstone Higgs

Heavy Higgs of the Twin Higgs models

Contact Info

Product

Resources

About