Non-resonant Collider Signatures of a Singlet-Driven Electroweak Phase Transition

Abstract

We analyze the collider signatures of the real singlet extension of the Standard Model in regions consistent with a strong first-order electroweak phase transition and a singlet-like scalar heavier than the Standard Model-like Higgs. A definitive correlation exists between the strength of the phase transition and the trilinear coupling of the Higgs to two singlet-like scalars, and hence between the phase transition and non-resonant scalar pair production involving the singlet at colliders. We study the prospects for observing these processes at the LHC and a future 100 TeV $pp$ collider, focusing particularly on double singlet production. We also discuss correlations between the strength of the electroweak phase transition and other observables at hadron and future lepton colliders. Searches for non-resonant singlet-like scalar pair production at 100 TeV would provide a sensitive probe of the electroweak phase transition in this model, complementing resonant di-Higgs searches and precision measurements. Our study illustrates a strategy for systematically exploring the phenomenologically viable parameter space of this model, which we hope will be useful for future work.

34 pages + 4 appendices, 13 figures. Comments welcome!

References in corpus (31)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• LHAPDF6: parton density access in the LHC precision era
• FeynRules - Feynman rules made easy
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Singlet Higgs Phenomenology and the Electroweak Phase Transition
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• Searches for electroweak production of charginos, neutralinos, and sleptons decaying to leptons and W, Z, and Higgs bosons in pp collisions at 8 TeV
• Testing Electroweak Baryogenesis with Future Colliders
• Singlet-Catalyzed Electroweak Phase Transitions and Precision Higgs Studies
• Building and testing models with extended Higgs sectors
• Exploring Resonant di-Higgs production in the Higgs Singlet Model
• New Physics in LHC Higgs boson pair production
• A unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures
• Higgs Self-Coupling as a Probe of Electroweak Phase Transition
• Dynamics of Electroweak Phase Transition In Singlet-Scalar Extension of the Standard Model
• Taming the Goldstone contributions to the effective potential
• Search for anomalous production of events with three or more leptons in pp collisions at sqrt(s) = 8 TeV
• Consistent Use of Effective Potentials
• On the gauge dependence of vacuum transitions at finite temperature
• Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended SM
• Baryogenesis and Gravitational Waves from Runaway Bubble Collisions
• Higgs Self-Coupling Measurements at a 100 TeV Hadron Collider
• Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies
• Dimensional reduction of the Standard Model coupled to a new singlet scalar field
• A Double Take on New Physics in Double Higgs Production
• Interplay of Infrared Divergences and Gauge-Dependence of the Effective Potential
• Electroweak Baryogenesis and Dark Matter via a Pseudoscalar vs. Scalar
• The Higgs Portal Above Threshold
• NLO electroweak corrections in general scalar singlet models
• The Higgs singlet extension at LHC Run 2

Cited by in corpus (60)

• Detecting gravitational waves from cosmological phase transitions with LISA: an update
• On the Maximal Strength of a First-Order Electroweak Phase Transition and its Gravitational Wave Signal
• Gravitational waves from a first order electroweak phase transition: a brief review
• The Missing Link in Gravitational-Wave Astronomy: Discoveries waiting in the decihertz range
• Collider and Gravitational Wave Complementarity in Exploring the Singlet Extension of the Standard Model
• Putting SMEFT Fits to Work
• Fusing Vectors into Scalars at High Energy Lepton Colliders
• Standard Model with a Complex Scalar Singlet: Cosmological Implications and Theoretical Considerations
• The Electroweak Phase Transition: A Collider Target
• Gravitational waves and electroweak baryogenesis in a global study of the extended scalar singlet model
• Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics
• Singlet-assisted electroweak phase transition at two loops
• Nonperturbative analysis of the gravitational waves from a first-order electroweak phase transition
• Extending the Universal One-Loop Effective Action: Heavy-Light Coefficients
• Nonperturbative Analysis of the Electroweak Phase Transition in the Two Higgs Doublet Model
• Baryogenesis and gravity waves from a UV-completed electroweak phase transition
• Higgs Pair Production at Future Hadron Colliders: From Kinematics to Dynamics
• Electroweak phase transition in the $\Sigma$SM - I: Dimensional reduction
• Electroweak phase transition with spontaneous $Z_2$-breaking
• Resonant Di-Higgs Production at Gravitational Wave Benchmarks: A Collider Study using Machine Learning
• Exotic Higgs Decays and the Electroweak Phase Transition
• Multistep Strongly First Order Phase Transitions from New Fermions at the TeV Scale
• Supercool subtleties of cosmological phase transitions
• Probing Electroweak Phase Transition via Enhanced Di-Higgs Production
• Three-dimensional effective theories for the two Higgs doublet model at high temperature
• Supercool exit: Gravitational waves from QCD-triggered conformal symmetry breaking
• Electroweak phase transition and Higgs phenomenology in the Georgi-Machacek model
• Triple Higgs boson production to six $b$-jets at a 100 TeV proton collider
• Gravitation waves from QCD and electroweak phase transitions
• Electroweak Phase Transition with an SU(2) Dark Sector
• Improved stellar limits on a light CP-even scalar
• Two Higgs Doublet Dark Matter Portal
• Enhanced di-Higgs Production in the Complex Higgs Singlet Model
• LHC Search of New Higgs Boson via Resonant Di-Higgs Production with Decays into 4W
• Uncovering the High Scale Higgs Singlet Model
• Di-Higgs Blind Spots in Gravitational Wave Signals
• The minimal fermionic model of electroweak baryogenesis
• Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets
• Variations on the Vev Flip-Flop: Instantaneous Freeze-out and Decaying Dark Matter
• Beyond the Standard Model Effective Field Theory: The Singlet Extended Standard Model
• Corrections to di-Higgs boson production with light stops and modified Higgs couplings
• Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM
• Two-Real-Singlet-Model Benchmark Planes
• Light scalar explanation for 18 TeV GRB 221009A
• Dark matter and electroweak phase transition in the mixed scalar dark matter model
• On the Validity of the Effective Potential and the Precision of Higgs Self Couplings
• The Electro-Weak Phase Transition at Colliders: Discovery Post-Mortem
• Resonant Multi-Scalar Production in the Generic Complex Singlet Model in the Multi-TeV Region
• Prospecting bipartite Dark Matter through Gravitational Waves
• $\nu$ Electroweak Baryogenesis: The Scalar Singlet Strikes Back
• Shedding light on the electroweak phase transition from exotic Higgs boson decays at the lifetime frontiers
• Gravitational waves from first-order electroweak phase transition in a model with light sgoldstinos
• Real Singlet Scalar Benchmarks in the Multi-TeV Resonance Regime
• First Order Electroweak Phase Transition from Weakly Coupled sub-GeV Physics and Possible Connection to Fermion Flavor
• Pair production of neutral Higgs particles in the B-LSSM
• Gravitational waves from patterns of electroweak symmetry breaking: an effective perspective
• Revisiting Singlet Fermion Dark Matter with a Scalar Portal: Connecting Higgs Phenomenology and Strong Electroweak Phase Transition
• Di-Higgs Production in SUSY models at the LHC
• Baryogenesis via relativistic bubble walls
• Light scalars in neutron star mergers