Radiative corrections to pair production of charged Higgs bosons in collisions

Guasch, Jaume; Hollik, W.; Kraft, Axel

doi:10.1016/s0550-3213(00)00723-9

Cited by 30 publications

(28 citation statements)

References 36 publications

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“…Let us, however, briefly comment on the prospects for the charged Higgs-pair channel, e + e − → H + H − . This was considered some time ago in references [41][42][43]. These old studies were devoted to the computation of σ(e + e − → H + H − ) at one-loop in both the MSSM and the 2HDM.…”

Section: Neutral Higgs-pair Production At 1 Loop: Numerical Analymentioning

confidence: 99%

“…13 We should nevertheless put a note of caution here in that the unitarity constraints that were employed in Ref. [41][42][43] are substantially less restrictive than those considered throughout our work. In this regard, an upgraded calculation of σ(e + e − → H + H − ) is mandatory before we can judiciously compare with the results that we have presented here for the neutral Higgs boson channels.…”

Section: Neutral Higgs-pair Production At 1 Loop: Numerical Analymentioning

confidence: 99%

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Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions

López-Val

Solà

2010

Phys. Rev. D

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The pairwise production of neutral Higgs bosons (h 0 A 0 , H 0 A 0 ) is analyzed in the context of the future linear colliders, such as the ILC and CLIC, within the general Two-Higgs-Doublet Model (2HDM). The corresponding cross-sections are computed at the one-loop level, including the full set of contributions at order O(α 3 ew ) together with the leading O(α 4 ew ) terms, in full compliance with the current phenomenological bounds and the stringent theoretical constraints inherent to the consistency of the model. We uncover regions across the 2HDM parameter space, mainly for low tan β ∼ 1 and moderate -and negative -values of the relevant λ5 parameter, wherein the radiative corrections to the Higgs-pair production cross section, σ(e + e − → A 0 h 0 /A 0 H 0 ), can comfortably reach |δσ|/σ ∼ 50%. This behavior can be traced back to the enhancement capabilities of the trilinear Higgs self-interactions -a trademark feature of the 2HDM, with no counterpart in the Minimal Supersymmetric Standard Model (MSSM). The corrections are strongly dependent on the actual value of λ5 as well as on the Higgs mass spectrum. Interestingly enough, the quantum effects are positive for energies around √ s ≃ 500 GeV, thereby producing a significant enhancement in the expected number of events precisely around the fiducial startup energy of the ILC. The Higgs-pair production rates can be substantial, typically a few tens of femtobarn, therefore amounting to a few thousand events per 100 fb −1 of integrated luminosity. In contrast, the corrections are negative in the highest energy range (viz.√ s ∼ 1 TeV and above). We conclude that a precise measurement of the 2H final states could carry unambiguous footprints of an extended (non-supersymmetric) Higgs sector. Finally, to better assess the scope of these effects, we compare the exclusive pairwise production of Higgs bosons with the inclusive gauge boson fusion channels leading to 2H + X final states, and also with the exclusive triple Higgs boson production. We find that these multiparticle final states can be highly complementary in the overall Higgs bosons search strategy.

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Section: Neutral Higgs-pair Production At 1 Loop: Numerical Analymentioning

confidence: 99%

Section: Neutral Higgs-pair Production At 1 Loop: Numerical Analymentioning

confidence: 99%

Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions

López-Val

Solà

2010

Phys. Rev. D

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“…Similarly, the two-body final states e + e − → Zh and e + e − → Ah (with h = h 0 H 0 ) are long known to be complementary to each other in the MSSM [3]. There are also studies considering radiative corrections to charged Higgs production in e + e − collisions within the 2HDM [10], and double and multiple Higgs production at the LHC [11], but to our knowledge a complete analysis of the processes (1.1) in the general 2HDM is lacking [12]. In another vein, triple Higgs boson (3H) production may open new vistas in our desperate hunting for the mass generation mechanism.…”

Section: Introductionmentioning

confidence: 99%

Triple Higgs boson production in the linear collider

et al. 2008

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Abstract. Triple Higgs boson production (3H) may provide essential information to reconstruct the Higgs potential. We consider 3H-production in the International Linear Collider (ILC) both in the Minimal Supersymmetric Standard Model (MSSM) and in the general Two-Higgs-doublet Model (2HDM). We compute the total cross-section for the various 3H final states, such as H + H − h 0 , H 0 A 0 h 0 , etc. and compare with the more traditional double Higgs (2H) boson production processes. While the cross-sections for the 2H final states lie within the same order of magnitude in both the MSSM and 2HDM, we find that for the 3H states the maximum 2HDM cross-sections, being of order 0.1 pb, are much larger than the MSSM ones which, in most cases, are of order 10 −6 pb or less. Actually, the 3H processes could be the dominant mechanism for Higgs boson production in the 2HDM. Ultimately, the origin of the remarkable enhancement of the 3H channels in the 2HDM case (for both type I and type II models) originates in the structure of the trilinear Higgs boson couplings. The extremely clean environment of the ILC should allow a relatively comfortable tagging of the three Higgs boson events. In view of the fact that the MSSM contribution is negligible, these events should manifest themselves mainly in the form of 6 heavy-quark jet final states. Some of these signatures could be spectacular, and in case of being detected would constitute strong evidence of an extended Higgs sector of non-supersymmetric origin.

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“…Ref. [9] gives the complete one-loop electroweak corrections to the cross section of the process e + e − → H + H − in the THDM as well as the MSSM. It shows that the corrections vary in the range between −15% and 10%.…”

Section: Introductionmentioning

confidence: 99%

Full one-loop supersymmetric corrections to charged Higgs boson pair production inγγcollisions

et al. 2005

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The complete one-loop electroweak corrections to charged Higgs boson pair production in γγ collision mode at linear colliders in the minimal supersymmetric standard model (MSSM), are calculated in this paper. We discuss the dependence of the corrections to the subprocess γγ → H + H − on the related parameters, such as the colliding energy, charged Higgs boson mass M H ± and some supersymmetric parameters tan β, M SUSY and gaugino mass parameter M 2 . We find that the corrections generally reduce the Born cross sections and the relative one-loop corrections to both the subprocess typically in the range of −10% to −30%. We also present the numerical results at the SPS1a' point from the SPA project. We conclude that the full one-loop electroweak corrections to subprocess γγ → H + H − and the parent process e + e − → γγ → H + H − are significant and therefore should be considered in precise analysis of charged Higgs boson pair productions via γγ collision at future linear colliders.

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Radiative corrections to pair production of charged Higgs bosons in collisions

Cited by 30 publications

References 36 publications

Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions

Neutral Higgs-pair production at linear colliders within the general two-Higgs-doublet model: Quantum effects and triple Higgs boson self-interactions

Triple Higgs boson production in the linear collider

Full one-loop supersymmetric corrections to charged Higgs boson pair production inγγcollisions

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