Electroweak Phase Transition in Two Scalar Singlet Model with pNGB Dark Matter

Abstract

We investigate the dynamics of the electroweak phase transition within an extended Standard Model framework that includes one real scalar $(\Phi )$ and one complex scalar $(S)$, both of which are SM gauge singlets. The global $U(1)$ symmetry is softly broken to a ${\mathcal{Z}}_3$ symmetry by the $S^3$ term in the scalar potential. After this $U(1)$ symmetry breaking, the imaginary component of the complex scalar $(S)$ acts as a pseudo-Nambu-Goldstone boson (pNGB) dark matter candidate, naturally stabilized by ${\mathcal{Z}}_2$ symmetry of the scenario. Specially, the spontaneous breaking of the global $U(1)$ symmetry to a discrete ${\mathcal{Z}}_3$ subgroup can introduce effective cubic terms in the scalar potential, which facilitates a strong first-order phase transition. We analyze both single-step and multi-step first-order phase transitions, identifying the parameter space that satisfies the dark matter relic density constraints, complies with all relevant experimental constraints, and exhibits a strong first-order electroweak phase transition. The interplay of these criteria significantly restricts the model parameter space, often leading to an under-abundant relic density. Moreover, we delve into the gravitational wave signatures associated with this framework, offering valuable insights that complement traditional dark matter direct and indirect detection methods.

51 pages, 10 figures, 7 tables. Published version

References in corpus (28)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• micrOMEGAs4.1: two dark matter candidates
• Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves
• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• HiggsBounds-5: Testing Higgs Sectors in the LHC 13 TeV Era
• HiggsSignals-2: Probing new physics with precision Higgs measurements in the LHC 13 TeV era
• Gravitational waves from first-order cosmological phase transitions: lifetime of the sound wave source
• Model-independent energy budget of cosmological first-order phase transitions
• Model-independent energy budget for LISA
• On the gauge dependence of vacuum transitions at finite temperature
• Gravitational waves and Higgs boson couplings for exploring first order phase transition in the model with a singlet scalar field
• Electroweak Precision Fit and New Physics in light of $W$ Boson Mass
• Gravitational Wave Signals of Pseudo-Goldstone Dark Matter in the ${\mathbb{Z}}_3$ Complex Singlet Model
• First-order electroweak phase transition in a complex singlet model with ${\mathbb{Z}}_3$ symmetry
• Pseudo-Nambu-Goldstone dark matter from gauged $U(1{)}_{B-L}$ symmetry
• Pseudo Nambu-Goldstone Dark Matter: Examples of Vanishing Direct Detection Cross Section
• Baryogenesis in the two doublet and inert singlet extension of the Standard Model
• Pseudo-Goldstone dark matter: gravitational waves and direct-detection blind spots
• Direct and indirect probes of Goldstone dark matter
• Global fit of pseudo-Nambu-Goldstone Dark Matter
• Pseudo-Goldstone Dark Matter in gauged $B-L$ extended Standard Model
• Pseudo-Nambu-Goldstone Dark Matter Model Inspired by Grand Unification
• Constraints on Pseudo-Nambu-Goldstone dark matter from direct detection experiment and neutron star reheating temperature
• Pseudo-Goldstone Dark Matter in $SO(10)$
• Electroweak Phase Transition in a Right-Handed Neutrino Superfield Extended NMSSM
• Electroweak Corrections in a Pseudo-Nambu Goldstone Dark Matter Model Revisited
• A model of pseudo-Nambu-Goldstone dark matter from a softly broken $SU(2)$ global symmetry with a $U(1)$ gauge symmetry

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