Bayesian analysis of the complex singlet model with phase transition gravitational waves

Abstract

We explore the prospects of probing the complex singlet extension of the Standard Model (CxSM) with gravitational waves from the electroweak phase transition. The study establishes a connection of the scalar potential parameters, the thermodynamic properties of the phase transition, with the directly measured stochastic gravitational-wave background in the presence of astrophysical background and foreground. Considering the space-based gravitational-wave detector Taiji, we construct a frequency-domain likelihood that incorporates instrumental and astrophysical noises, and we perform both Fisher-matrix forecasts and Bayesian nested sampling analysis. The comparison of these two approaches demonstrates consistent parameter recovery and highlights the sensitivity of Taiji to millihertz gravitational-wave signals. We further propagate the inferred constraints on the gravitational-wave spectrum back to the underlying CxSM parameters, obtaining meaningful limits on the Higgs self-couplings. The results emphasize the complementarity between gravitational-wave observations and collider measurements, showing that future missions such as Taiji can serve as a powerful probe of electroweak-scale new physics and the dynamical origin of the Higgs sector.

12 pages, 7 figures, 2 tables

References in corpus (41)

• TianQin: a space-borne gravitational wave detector
• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• Bilby: A user-friendly Bayesian inference library for gravitational-wave astronomy
• Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions
• Electroweak baryogenesis
• Detecting gravitational waves from cosmological phase transitions with LISA: an update
• The construction and use of LISA sensitivity curves
• Taiji Program: Gravitational-Wave Sources
• The TianQin project: current progress on science and technology
• The NANOGrav 15-year Data Set: Observations and Timing of 68 Millisecond Pulsars
• Cosmology with the Laser Interferometer Space Antenna
• Complex Singlet Extension of the Standard Model
• The second data release from the European Pulsar Timing Array I. The dataset and timing analysis
• Cosmological phase transitions: from perturbative particle physics to gravitational waves
• Cosmic phase transitions: their applications and experimental signatures
• LISA for Cosmologists: Calculating the Signal-to-Noise Ratio for Stochastic and Deterministic Sources
• The First Round Result from the TianQin-1 Satellite
• Gravitational waves from a first order electroweak phase transition: a brief review
• Time-Delay Interferometry
• Confusion Noise from LISA Capture Sources
• Discriminating between a Stochastic Gravitational Wave Background and Instrument Noise
• Standard Model with a Complex Scalar Singlet: Cosmological Implications and Theoretical Considerations
• The Electroweak Phase Transition: A Collider Target
• Impact of a complex singlet: From dark matter to baryogenesis
• The Gravitational-Wave Physics II: Progress
• A global view on the Higgs self-coupling at lepton colliders
• Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics
• Gravitational waves from first-order phase transitions in LISA: reconstruction pipeline and physics interpretation
• Can supercooled phase transitions explain the gravitational wave background observed by pulsar timing arrays?
• Spectral separation of the stochastic gravitational-wave background for LISA: observing both cosmological and astrophysical backgrounds
• From Spinning Conformal Blocks to Matrix Calogero-Sutherland Models
• Spectral separation of the stochastic gravitational-wave background for LISA in the context of a modulated Galactic foreground
• Prospects for LISA to detect a gravitational-wave background from first order phase transitions
• Complementarity of the future $e^{+}{e}^{-}$ colliders and gravitational waves in the probe of complex singlet extension to the Standard Model
• Reconstructing physical parameters from template gravitational wave spectra at LISA: first order phase transitions
• All-sky search for long-duration gravitational wave transients in the first Advanced LIGO observing run
• Hyperunified field theory and Taiji program in space for GWD
• Optimized Search for a Binary Black Hole Merger Population in LIGO-Virgo O3 Data
• A search for triple Higgs boson production in the $6b$ final state using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Universality of the muon component of extensive air showers
• Detecting Cosmological Phase Transitions with Taiji: Sensitivity Analysis and Parameter Estimation

Cited by in corpus (1)

• Inflationary phase transitions in the early Universe: A Bayesian study with space-based gravitational-wave detectors