Signs of heavy Higgs bosons at CLIC: An $e^{+}{e}^{-}$ road to the Electroweak Phase Transition

Abstract

We analyse the sensitivity of the proposed Compact Linear Collider (CLIC) to the existence of beyond the Standard Model (SM) Higgs bosons through their decays into pairs of massive gauge bosons $H\to VV$ and SM-like Higgses $H\to hh$, considering CLIC centre of mass energies $\sqrt{s}=1.4$ TeV and $3$ TeV. We find that resonant di-Higgs searches at CLIC would allow for up to two orders of magnitude improvement w.r.t. the sensitivity achievable by HL-LHC in the mass range $m_H\in [250\mathrm{GeV},1\mathrm{TeV}]$. Focusing then on a real singlet extension of the SM, we explore the prospects of heavy Higgs searches at CLIC for probing the regions of parameter space yielding a strongly first order electroweak phase transition that could generate the observed matter-antimatter asymmetry of the Universe. Our study illustrates the complementarity between CLIC and other possible future colliders like FCC-ee in probing singlet extensions of the SM, and shows that high-energy $e^{+}{e}^{-}$ colliders provide a powerful means to unravel the nature of electroweak symmetry breaking in the early Universe.

arXiv comment27 pages, 15 figures

References in corpus (35)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• FastJet user manual
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• The Next-to-Minimal Supersymmetric Standard Model
• Electroweak baryogenesis
• The Twin Higgs: Natural Electroweak Breaking from Mirror Symmetry
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Singlet Higgs Phenomenology and the Electroweak Phase Transition
• Strong Electroweak Phase Transitions in the Standard Model with a Singlet
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• Baryon Washout, Electroweak Phase Transition, and Perturbation Theory
• The role of polarized positrons and electrons in revealing fundamental interactions at the Linear Collider
• Testing Electroweak Baryogenesis with Future Colliders
• Higgs self-coupling measurements at the LHC
• Singlet-Catalyzed Electroweak Phase Transitions and Precision Higgs Studies
• Exploring Resonant di-Higgs production in the Higgs Singlet Model
• Handbook of LHC Higgs Cross Sections: 3. Higgs Properties
• Higgs Physics at the CLIC Electron-Positron Linear Collider
• A unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures
• Probing the Electroweak Phase Transition with Higgs Factories and Gravitational Waves
• Probing the Higgs Portal at the LHC Through Resonant di-Higgs Production
• Higgs Self-Coupling as a Probe of Electroweak Phase Transition
• Standard Model Higgs boson pair production in the $(b\bar{b})(b\bar{b})$ final state
• Fusing Vectors into Scalars at High Energy Lepton Colliders
• Strong electroweak phase transitions without collider traces
• A New Probe of Naturalness
• Singlet-Catalyzed Electroweak Phase Transitions in the 100 TeV Frontier
• Synergy between measurements of the gravitational wave and the triple Higgs coupling in probing first order phase transition
• Singlet-like Higgs bosons at present and future colliders
• Resonant Di-Higgs Production in the $b\bar{b}WW$ Channel: Probing the Electroweak Phase Transition at the LHC
• Updated baseline for a staged Compact Linear Collider
• Benchmarks for Double Higgs Production in the Singlet Extended Standard Model at the LHC
• Heavy to light Higgs boson decays at NLO in the Singlet Extension of the Standard Model
• A new jet reconstruction algorithm for lepton colliders

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• The Electro-Weak Phase Transition at Colliders: Confronting Theoretical Uncertainties and Complementary Channels
• Probing a light dark sector at future lepton colliders via invisible decays of the SM-like and dark Higgs bosons
• P-even, CP-violating Signals in Scalar-Mediated Processes