Doubly and singly charged Higgs pair production at high-energy e+e− linear colliders

Cao, Junpeng; Tian, Xi-Yan

doi:10.1142/s0217751x16500561

Cited by 5 publications

(4 citation statements)

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“…Therefore, one has the opportunity to explore these nonstandard scalars at the current and future collider experiments. In literature one can find several articles where the search of Z 2 even scalars have been explored in context of the Large Hadron Collider (LHC) [50][51][52][53][54][55] as well as at the International Linear Collider (ILC) [56][57][58]. However, in this work instead of Z 2 even scalars, we have performed collider search of dark matter and the associated Z 2 odd scalars at the 13 TeV LHC.…”

Section: Introductionmentioning

confidence: 99%

Explaining dark matter and neutrino mass in the light of TYPE-II seesaw model

Biswas

Shaw

2018

J. Cosmol. Astropart. Phys.

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With the motivation of simultaneously explaining dark matter and neutrino masses, mixing angles, we have invoked the Type-II seesaw model extended by an extra SU (2) doublet Φ. Moreover, we have imposed a Z 2 parity on Φ which remains unbroken as the vacuum expectation value of Φ is zero. Consequently, the lightest neutral component of Φ becomes naturally stable and can be a viable dark matter candidate. On the other hand, light Majorana masses for neutrinos have been generated following usual Type-II seesaw mechanism. Further in this framework, for the first time we have derived the full set of vacuum stability and unitarity conditions, which must be satisfied to obtain a stable vacuum as well as to preserve the unitarity of the model respectively. Thereafter, we have performed extensive phenomenological studies of both dark matter and neutrino sectors considering all possible theoretical and current experimental constraints. Finally, we have also discussed a qualitative collider signatures of dark matter and associated odd particles at the 13 TeV Large Hadron Collider.

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Section: Introductionmentioning

confidence: 99%

Explaining dark matter and neutrino mass in the light of TYPE-II seesaw model

Biswas

Shaw

2018

J. Cosmol. Astropart. Phys.

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“…[44]. For discussions on Higgs triplet model at a linear collider, see [45][46][47][48][49] and at ep collider, see [50]. Displaced vertex signatures have been discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Probing doubly and singly charged Higgs bosons at the pp collider HE-LHC

et al. 2020

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We analyse the signal sensitivity of multi-lepton final states at collider that can arise from doubly and singly charged Higgs decay in a type-II seesaw framework. We assume triplet vev to be very small and degenerate masses for both the charged Higgs states. The leptonic branching ratio of doubly and singly charged Higgs states have a large dependency on the neutrino oscillation parameters, lightest neutrino mass scale, as well as neutrino mass hierarchy.We explore this as well as the relation between the leptonic branching ratios of the singly and doubly charged Higgs states in detail. We evaluate the effect of these uncertainties on the production cross-section. Finally, we present a detailed analysis of multi-lepton final states for a future hadron collider HE-LHC, that can operate with center of mass energy √ s = 27 TeV.

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“…For lower masses, the range 160 − 172 GeV can be covered with only L ∼ 24 fb −1 of luminosity. For the earlier discussions on Higgs triplet model at a linear collider, see [40][41][42][43]. For the other SM and BSM searches at CLIC and other linear colliders, see [38,[44][45][46][47][48][49][50][51][52][53][54][55][56][57][58] for Higgs physics and effective field theory, [59][60][61][62][63] for different BSM scenarios, and [64][65][66][67][68][69][70] for seesaw and radiative neutrino mass model searches.…”

Section: Introductionmentioning

confidence: 99%

Probing the type-II seesaw mechanism through the production of Higgs bosons at a lepton collider

et al. 2018

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We investigate the production and decays of doubly-charged Higgs bosons for the Type-II seesaw mechanism at an e þ e − collider with two center of mass energies, ffiffi ffi s p ¼ 380 GeV and 3 TeV, and analyze the fully hadronic final states in detail. Lower mass ranges can be probed during the 380 GeV run of the collider, while high mass ranges, which are beyond the 13 TeV Large Hadron Collider discovery reach, can be probed with ffiffi ffi s p ¼ 3 TeV. For such a heavy Higgs boson, the final decay products are collimated, resulting in fat-jets. We perform a substructure analysis to reduce the background and find that a doublycharged Higgs boson in the mass range 800-1120 GeV can be discovered during the 3 TeV run, with integrated luminosity L ∼ 95 fb −1 of data. For 380 GeV center of mass energy, we find that for the doublycharged Higgs boson in the range 160-172 GeV, a 5σ significance can be achieved with only integrated luminosity L ∼ 24 fb −1. Therefore, a light Higgs boson can be discovered immediately during the run of a future e þ e − collider.

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Doubly and singly charged Higgs pair production at high-energy e+e− linear colliders

Cited by 5 publications

References 50 publications

Explaining dark matter and neutrino mass in the light of TYPE-II seesaw model

Explaining dark matter and neutrino mass in the light of TYPE-II seesaw model

Probing doubly and singly charged Higgs bosons at the pp collider HE-LHC

Probing the type-II seesaw mechanism through the production of Higgs bosons at a lepton collider

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