Updated constraints on Georgi-Machacek model, and its electroweak phase transition and associated gravitational waves

Abstract

With theoretical constraints such as perturbative unitarity and vacuum stability conditions and updated experimental data of Higgs measurements and direct searches for exotic scalars at the LHC, we perform an updated scan of the allowed parameter space of the Georgi-Machacek (GM) model. With the refined global fit, we examine the allowed parameter space for inducing strong first-order electroweak phase transitions (EWPTs) and find only the one-step phase transition is phenomenologically viable. Based upon the result, we study the associated gravitational wave (GW) signals and find most of which can be detected by several proposed experiments. We also make predictions on processes that may serve as promising probes to the GM model in the near future at the LHC, including the di-Higgs productions and several exotic scalar production channels.

arXiv comment42 pages, 11 figures, 9 tables

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Cited by in corpus (16)

• On the $W$-mass and New Higgs Bosons
• A 95 GeV Higgs Boson in the Georgi-Machacek Model
• The 95 GeV Excess in the Georgi-Machacek Model: Single or Twin Peak Resonance
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• Light scalars within the $\mathcal{C}\mathcal{P}$-conserving Aligned-two-Higgs-doublet model
• New physics implications of VBF searches exemplified through the Georgi-Machacek model
• CP Violation in a Model with Higgs Triplets
• Interpretation of 95 GeV Excess within the Georgi-Machacek Model in Light of Positive Definiteness Constraints
• Gravitational wave signals from leptoquark-induced first order electroweak phase transitions
• Charged Higgs decay to $W^{\pm }$ and heavy neutral Higgs decaying into ${\tau }^{+}{\tau }^{-}$ in Georgi Machacek Model at LHC
• Revisiting the decoupling limit of the Georgi-Machacek model with a scalar singlet
• Diphoton signals for the Georgi-Machacek scenario at the Large Hadron Collider
• LHC Signatures of the Generic Georgi-Machacek Model
• Doubly charged Higgs boson at same-sign lepton colliders
• Triplet fermion WIMP dark matter in the general supersymmetric Georgi-Machacek model
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