Triplet Higgs boson collider phenomenology after the LHC

Abstract

ATLAS and CMS have discovered a Standard Model Higgs-like particle. One of the main discovery channels is the Higgs decay to two photons, which, at the moment, seems to be considerably enhanced over the Standard Model expectation. Models with additional charged matter coupling to the Higgs sector can enhance or decrease the Higgs to two photons branching ratio. We take this as motivation to confront the so-called Georgi-Machacek model of Higgs triplets with the results of recent searches for a SM Higgs boson performed at the LHC. We also investigate the model in regions of the allowed parameter space relevant for a SM-like phenomenology. The Georgi-Machacek model avoids tree-level issues of the T parameter, while offering a vastly modified Higgs phenomenology compared to the Standard Model. This comes at the price of introducing another fine-tuning problem related to electroweak precision measurements. We investigate the collider phenomenology of the Georgi-Machacek model in the light of existing collider constraints beyond any effective field theory approximation and contextualize our findings with electroweak precision constraints.

Added 3 references, reference list reordered, few typos fixed, explanations improved in a couple of places, matches version accepted for publication in PRD

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Cited by in corpus (58)

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• Limitations and Opportunities of Off-Shell Coupling Measurements
• Search for doubly charged scalar bosons decaying into same-sign $W$ boson pairs with the ATLAS detector
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• Search for anomalous electroweak production of vector boson pairs in association with two jets in proton-proton collisions at 13 TeV
• Probing exotic Higgs sectors from the precise measurement of Higgs boson couplings
• All the generalized Georgi-Machacek models
• Novel Constraint on Parameter Space of the Georgi-Machacek Model by Current LHC Data
• Higgs Physics: It ain't over till it's over
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• Enhancements of weak gauge boson scattering processes at the CERN LHC
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• Vacuum misalignment and pattern of scalar masses in the SU(5)/SO(5) composite Higgs model
• Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Phenomenology of the Georgi-Machacek model at future electron-positron colliders
• Learning what the Higgs boson is mixed with
• Supersymmetric Custodial Triplets
• Bounding the top Yukawa with Higgs-associated single-top production
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• Real singlet scalar dark matter extension of the Georgi-Machacek model
• Theoretical Constraints on Additional Higgs Bosons in Light of the 126 GeV Higgs
• Naturalness in Type II seesaw model and implications for physical scalars
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• Double Higgs production at LHC, see-saw type II and Georgi-Machacek model
• Degenerate Higgs bosons decays to $\gamma \gamma$ and $Z\gamma$ in the type II Seesaw Model
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• Explaining The CDF-II W-Boson Mass Anomaly in the Georgi-Machacek Extension Models
• Unavoidable Higgs coupling deviations in the $Z_2$-symmetric Georgi-Machacek model
• Constraining the Georgi-Machacek Model with a Light Higgs
• LHC diphoton and Z+photon Higgs signals in the Higgs triplet model with Y=0
• Light (and darkness) from a light hidden Higgs
• Triplet-extended scalar sector and the naturalness problem
• A UV Complete Compositeness Scenario: LHC Constraints Meet The Lattice
• More Constraints on the Georgi-Machacek Model
• Dark Matter from the Supersymmetric Custodial Triplet Model
• New physics implications of VBF searches exemplified through the Georgi-Machacek model
• Charged Higgs Discovery Prospects
• Interpretation of 95 GeV Excess within the Georgi-Machacek Model in Light of Positive Definiteness Constraints
• S-Channel Dark Matter Simplified Models and Unitarity
• $WWV$ $(V=\gamma ,Z)$ vertex in the Georgi-Machacek model
• Extended Higgs sectors, effective field theory and Higgs phenomenology
• Revisiting the decoupling limit of the Georgi-Machacek model with a scalar singlet
• Veltman Criteria in Beyond Standard Model Effective Field Theory of Complex Scalar Triplet
• LHC Signatures of the Generic Georgi-Machacek Model
• Anomalous production of massive gauge boson pairs at muon colliders
• Oblique corrections when $m_W\ne m_Z\cos {\theta }_W$ at tree level
• Dirac Triplet Extension of the MSSM
• Doubly charged Higgs boson at same-sign lepton colliders
• Triplet fermion WIMP dark matter in the general supersymmetric Georgi-Machacek model
• Positive definiteness constraints of effective scalar potential in Georgi-Machacek Model