Signals with six bottom quarks for charged and neutral Higgs bosons

Dermíšek, Radovan; Lunghi, Enrico; McGinnis, Navin; Shin, Seodong

doi:10.1007/jhep07(2020)241

Cited by 24 publications

(36 citation statements)

References 32 publications

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“…While we have focused on the interpretation of the analysis in a 2HDM vector-like quarks, the results can also be interpreted more broadly in models involving more exotic bosons, such as a Z & W , or scenarios of composite Higgs bosons [10]. Other related studies with vector-like quarks and leptons were presented in [11,12,13,14] The MSSM extended with a vector-like family provides one such example of TeV scale new physics involving new fermions and an extended Higgs sector. For mass scales of new particles O(10) TeV in this model, the seven largest couplings of the Standard Model can be understood for their IR fixed points originating from completely random values at the GUT scale.…”

Section: Discussionmentioning

confidence: 99%

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Charged and neutral Higgs bosons in final states with 6 bottom quarks

Dermíšek¹,

Lunghi²,

McGinnis³

et al. 2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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Section: Discussionmentioning

confidence: 99%

“…Possible strategies to extract this signal include analyses based on tagging four or five, high-p T b-jets, where the main challenge arises from suppressing irreducible multi-jet backgrounds. For details of the analysis see [6].…”

Section: Signatures At Hadron Collidersmentioning

confidence: 99%

Charged and neutral Higgs bosons in final states with 6 bottom quarks

Dermíšek¹,

Lunghi²,

McGinnis³

et al. 2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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“…In ref. [2] we investigated final states with combinations of 6 top and bottom quarks in an extension of the type-II 2HDM. In that case, since the top quark also decays into a bottom quark, a common signature for many possible decay chains is 6 bottom quarks.…”

Section: Introductionmentioning

confidence: 99%

Tau-jet signatures of vectorlike quark decays to heavy charged and neutral Higgs bosons

Dermíšek

Lunghi

McGinnis

et al. 2021

J. High Energ. Phys.

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We study 4b + 2τ and 4b + 1τ signatures of heavy neutral and charged Higgs bosons originating from cascade decays of pair-produced new quarks. Decays of vectorlike quarks through heavy Higgses can easily dominate in the two Higgs doublet model of type-II, and the studied signatures are common to many possible decay chains. We design search strategies for these final states and discuss the mass ranges of heavy Higgs bosons and new quarks that can be explored at the Large Hadron Collider as functions of branching ratios in a model independent way. We further combine the results with a similar study focusing on decays which lead to a 6b final state and interpret the sensitivity to charged and neutral Higgs bosons and vectorlike quarks in the type-II two Higgs doublet model. We find that the LHC reach for their masses extends to well above 2 TeV in the case of an SU(2) doublet quark and to at least 1.8 TeV for a bottom-like SU(2) singlet quark in the whole range of tan β between 1 and 50.

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“…In Ref. [4], the authors have studied the VLL decays mostly to muons and derived some generally applicable limits on various VLL pair production and decay processes. They pointed out that BR(τ → Z μ) must be less than 92%, 76% and 75% for the singlet VLL m τ = 125, 150, 200 GeV, respectively.…”

Section: Introductionmentioning

confidence: 99%

Search for the singlet vector-like lepton at future $$e^+ e^-$$ colliders

et al. 2021

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Searching for the new particles beyond the standard model (SM) is an important way to probe new physics beyond the SM. In one class of new particles there are nonchiral color singlet fermions that couple to the SM leptons, that is vector-like leptons (VLLs), which have been widely concerned in experiment and theory. The existing literature shows that the singlet VLLs suffer from a big difficult challenge for discovery at future proton-proton colliders. In this paper, we study the prospects of searching for the singlet VLLs in pure leptonic and fully hadronic channels at $$e^+ e^-$$ e + e - colliders. We find that there is an opportunity for excluding the region $$m_{\tau ^{\prime \pm }} \in $$ m τ ′ ± ∈ [180 GeV, 240 GeV] with $${\mathcal {L}}$$ L $$\in $$ ∈ [$$3.0\hbox { fb}^{-1}$$ 3.0 fb - 1 , $$14.9\hbox { fb}^{-1}$$ 14.9 fb - 1 ] ([$$0.1\hbox { fb}^{-1}$$ 0.1 fb - 1 , $$0.3\hbox { fb}^{-1}$$ 0.3 fb - 1 ]) at ILC of $$\sqrt{s} = 500\ \hbox { GeV}$$ s = 500 GeV , the region $$m_{\tau ^{\prime \pm }} \in $$ m τ ′ ± ∈ [240 GeV, 450 GeV] with $${\mathcal {L}} \in $$ L ∈ [$$9.9\hbox { fb}^{-1}$$ 9.9 fb - 1 , $$23.1\hbox { fb}^{-1}$$ 23.1 fb - 1 ] ([$$0.2\hbox { fb}^{-1}$$ 0.2 fb - 1 , $$0.3\hbox { fb}^{-1}$$ 0.3 fb - 1 ]) at ILC of $$\sqrt{s} = 1000\ \hbox { GeV}$$ s = 1000 GeV and the region $$m_{\tau ^{\prime \pm }} \in $$ m τ ′ ± ∈ [450 GeV, 700 GeV] with $${\mathcal {L}} \in $$ L ∈ [$$52.1\hbox { fb}^{-1}$$ 52.1 fb - 1 , $$197.9\hbox { fb}^{-1}$$ 197.9 fb - 1 ] ([$$2.21\hbox { fb}^{-1}$$ 2.21 fb - 1 , $$4.5\hbox { fb}^{-1}$$ 4.5 fb - 1 ]) at CLIC of $$\sqrt{s} = 1500\ \hbox {GeV}$$ s = 1500 GeV in the pure leptonic (fully hadronic) channel. It is more optimistic for excluding and discovering the singlet VLL through the fully hadronic channel at future high energy $$e^+ e^-$$ e + e - colliders.

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Signals with six bottom quarks for charged and neutral Higgs bosons

Cited by 24 publications

References 32 publications

Charged and neutral Higgs bosons in final states with 6 bottom quarks

Charged and neutral Higgs bosons in final states with 6 bottom quarks

Tau-jet signatures of vectorlike quark decays to heavy charged and neutral Higgs bosons

Search for the singlet vector-like lepton at future $$e^+ e^-$$ colliders

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