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Probing Extended Scalar Sectors with Precision $e^+e^-\to Zh$ and Higgs Diphoton Studies
High Energy Physics - Phenomenology · Submitted 21 Apr 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We find that the $\sigma(e^+ e^- \to Z h)$ and $\Gamma(h\to\gamma\gamma)$ complementarity is particularly pronounced for the complex triplet model.
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The abstract, sentence by sentence
We compute the one-loop corrections to $\sigma(e^+ e^- \to Z h)$ arising from representative extended Standard Model scalar sector scenarios. According to the new scalar $\mathrm{SU(2)_L}$ representations, we consider the inert doublet, real and complex triplet, quintuplet, and septuplet models. With the sub-percent level precision expected for prospective future $e+e-$ collider measurements of $\sigma(e^+ e^- \to Z h)$, studies of the Higgsstrahlung process will probe extended scalar sector particle spectrum and interactions in a manner complementary to direct searches at the Large Hadron Collider and possible future $pp$ colliders. We also compare with the sensitivity of future Higgs diphoton decay rate measurements. We find that the $\sigma(e^+ e^- \to Z h)$ and $\Gamma(h\to\gamma\gamma)$ complementarity is particularly pronounced for the complex triplet model.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We compute the one-loop corrections to $\sigma(e^+ e^- \to Z h)$ arising from representative extended Standard Model scalar sector scenarios. | contribution 0.96 | 0.95 | 0.04 | asserted 0.99 |
| s1 | According to the new scalar $\mathrm{SU(2)_L}$ representations, we consider the inert doublet, real and complex triplet, quintuplet, and septuplet models. | method 0.79 | 0.47 | 0.02 | asserted 0.95 |
| s2 | With the sub-percent level precision expected for prospective future $e+e-$ collider measurements of $\sigma(e^+ e^- \to Z h)$, studies of the Higgsstrahlung process will probe extended scalar sector particle spectrum and interactions in a manner complementary to direct searches at the Large Hadron Collider and possible future $pp$ colliders. | interpretation 0.75 | 0.12 | 0.41 | hedged possibility 0.61 |
| s3 | We also compare with the sensitivity of future Higgs diphoton decay rate measurements. | contribution 0.69 | 0.82 | 0.04 | asserted 0.91 |
| s4 | We find that the $\sigma(e^+ e^- \to Z h)$ and $\Gamma(h\to\gamma\gamma)$ complementarity is particularly pronounced for the complex triplet model. | result 0.97 | 0.96 | 0.68 | asserted 1.00 |
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The paper
Original abstract
We compute the one-loop corrections to $\sigma(e^+ e^- \to Z h)$ arising from representative extended Standard Model scalar sector scenarios. According to the new scalar $\mathrm{SU(2)_L}$ representations, we consider the inert doublet, real and complex triplet, quintuplet, and septuplet models. With the sub-percent level precision expected for prospective future $e+e-$ collider measurements of $\sigma(e^+ e^- \to Z h)$, studies of the Higgsstrahlung process will probe extended scalar sector particle spectrum and interactions in a manner complementary to direct searches at the Large Hadron Collider and possible future $pp$ colliders. We also compare with the sensitivity of future Higgs diphoton decay rate measurements. We find that the $\sigma(e^+ e^- \to Z h)$ and $\Gamma(h\to\gamma\gamma)$ complementarity is particularly pronounced for the complex triplet model.
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References
How the literature uses it
3 arXiv papers cite this in 5 sentences
Papers citing it · 3 sentences without a confident label
Cites it as background 2 papers
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The most general forms of renormalizable scalar potential are discussed in detail in Ref. [ref] , and there are usually 3 free parameters for $ϕ$-$H$ Higgs portal interactions depending on the quantum number of the multiplet in the $ℤ_2$ symmetric case.
Custodial Symmetry Violation in Scalar Extensions of the Standard Model · Case A: General $SU(2)_L$ $N$-plet scalar with $ℤ_2$ symmetry · 0.82
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The IDM has a rich phenomenology both at the colliders and in Dark Matter (DM) physics, and as such has been widely studied [ref] mostly in tree-level analyses, but also including higher-order corrections, either electroweak (EW) or QCD.
Higgs-strahlung at the LHC in the inert doublet model · Introduction · 0.92
What it cites · 85 sentences without a confident label
Builds on 2 papers
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This relation is an extension to the approximate perturbativity constraint on the couplings in the complex singlet model in Ref. [ref] which is based on the work in Ref. [ref] .
Complex Scalar Singlet Dark Matter: Vacuum Stability and Phenomenology · Numerical Results in $$ Scheme · 1.00
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This relation is an extension to the approximate perturbativity constraint on the couplings in the complex singlet model in Ref. [ref] which is based on the work in Ref. [ref] .
Ruling Out a Strongly-Interacting Standard Higgs Model · Numerical Results in $$ Scheme · 1.00
Uses the method or tool of 2 papers
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In what follows, we follow the representation of the $$ EW scalar multiplet and the convention of the formulism adopted in Ref. [ref] .
Scalar Electroweak Multiplet Dark Matter · Degenerate with Higgs Diphoton Decay Sensitivity · 0.92
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The renormalized quantities and renormalization constants are in accordance with the scheme of Denner [ref] , and are defined as follows [equation] where quantities with subscript $0$ denote the bare parameters.
Techniques for the calculation of electroweak radiative corrections at the one-loop level and results for W-physics at LEP200 · On-shell Renormalization Scheme · 1.00
Uses data or values from 4 papers
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In what follows, provide numerical results assuming the CEPC projections [ref] for purposes of concrete illustration [The precision for the Higgs production via the gluon and $bb̅$ fusion in $h→γγ$ channel is applied in addition in the complex triplet model to illustrate a straightforward improvement for the constraints in the parameter space. ].
CEPC Conceptual Design Report: Volume 2 - Physics & Detector · Numerical Results in $$ Scheme · 0.95
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In Ref. [ref] the regions of $> 5σ$ significance [The significance is defined as $Sig/√(Sig+Bkg)$ with Sig and Bkg the total signal and background event numbers.] are obtained using the discovery channels $H^++H^–$ and $H^±±H^∓$ with $H^±±$ decaying into same-sign di-leptons and/or di-bosons in the $,v_Δ$ plane with fixed neutrino masses ($m_ν_l=0.01$ eV for $l=e,μ,τ$) and Higgs portal couplings ($λ_4=0,λ_5=-0.1$) (see Fig. 7 therein).
Type-II Seesaw Scalar Triplet Model at a 100 TeV $pp$ Collider: Discovery and Higgs Portal Coupling Determination · Complementary with Higgs Diphoton Decays · 0.80
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Due to small mass splitting between the charged and neutral triplet scalars ($ΔM=166$) [ref] in the large scalar mass regime $M_Σ≫M_W$, the direct search for the dark matter involves the process of charged scalar pair production accompanying the decay to neutral scalar and a soft $π^±$, the so-called disappearing charge tracks (DCTs).
Cosmology and Astrophysics of Minimal Dark Matter · Degenerate with Higgs Diphoton Decay Sensitivity · 0.87
Cites as background 19 papers
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Real Triplet model [ref] : Here we consider $Y = 0$.
Precision observables in SU(2) x U(1) models with an additional Higgs triplet · Potentials in Specific Models · 0.94
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Real Triplet model [ref] : Here we consider $Y = 0$.
Higgs Triplets, Decoupling, and Precision Measurements · Potentials in Specific Models · 0.94
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Real Triplet model [ref] : Here we consider $Y = 0$.
Triplet Scalars and Dark Matter at the LHC · Potentials in Specific Models · 0.94
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