Interpreting the 95 GeV resonance in the Two Higgs Doublet Model: Implications for the Electroweak Phase Transition

Abstract

We investigate if the recent mass resonance excesses seen around 95 GeV at the Large Hadron Collider (LHC) can be reconciled with a first-order electroweak phase transition. Performing the first large-scale parameter scan of the Type I Two Higgs Doublet Model (2HDM) using high-temperature dimensionally reduced effective field theory, we focus on regions of parameter space consistent with interpreting the excess as an additional pseudoscalar state. We find that, in contrast to the Standard Model, the electroweak transition pattern in the 2HDM is generically first-order, proceeding either in a single or in two steps. While transition strengths can reach up to $v_c/T_C\sim 1.3$, the viable, collider-constrained parameter space yields $v_c/T_C\lesssim 1$. Thus, the gravitational wave signals lie below the projected reach of future interferometer experiments and are likely insufficient to support successful electroweak baryogenesis.

41 pages, 3 figures, 3 tables

References in corpus (113)

• Theory and phenomenology of two-Higgs-doublet models
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions
• The CP-conserving two-Higgs-doublet model: the approach to the decoupling limit
• Is There a Hot Electroweak Phase Transition at $m_H\gsim m_W$?
• HiggsBounds: Confronting Arbitrary Higgs Sectors with Exclusion Bounds from LEP and the Tevatron
• Detecting gravitational waves from cosmological phase transitions with LISA: an update
• HiggsBounds-4: Improved Tests of Extended Higgs Sectors against Exclusion Bounds from LEP, the Tevatron and the LHC
• HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC
• HiggsBounds 2.0.0: Confronting Neutral and Charged Higgs Sector Predictions with Exclusion Bounds from LEP and the Tevatron
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Energy Budget of Cosmological First-order Phase Transitions
• Taiji Program: Gravitational-Wave Sources
• Gravitational waves from the sound of a first order phase transition
• Numerical simulations of acoustically generated gravitational waves at a first order phase transition
• Gravitational Radiation from Colliding Vacuum Bubbles: Envelope Approximation to Many-Bubble Collisions
• The stochastic gravitational wave background from turbulence and magnetic fields generated by a first-order phase transition
• Generic Rules for High Temperature Dimensional Reduction and Their Application to the Standard Model
• Shape of the acoustic gravitational wave power spectrum from a first order phase transition
• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Endpoint of the hot electroweak phase transition
• Free Energy of QCD at High Temperature
• On the Maximal Strength of a First-Order Electroweak Phase Transition and its Gravitational Wave Signal
• Weak Radiative Decays of the B Meson and Bounds on $M_{H^{\pm }}$ in the Two-Higgs-Doublet Model
• Effective Field Theory Approach to High-Temperature Thermodynamics
• Applying Exclusion Likelihoods from LHC Searches to Extended Higgs Sectors
• Gravitational wave energy budget in strongly supercooled phase transitions
• A precision constraint on multi-Higgs-doublet models
• A Non-Perturbative Analysis of the Finite T Phase Transition in SU(2)xU(1) Electroweak Theory
• Baryogenesis in the Two-Higgs Doublet Model
• Dynamics of Non-renormalizable Electroweak Symmetry Breaking
• 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
• Flavor constraints on two-Higgs-doublet models with general diagonal Yukawa couplings
• Beyond S, T and U
• The Standard Model cross-over on the lattice
• Radiative Corrections to the $Zb\bar{b}$ Vertex and Constraints on Extended Higgs Sectors
• Theoretical uncertainties for cosmological first-order phase transitions
• $\bar{B}\to X_s\gamma$ in the Two Higgs Doublet Model up to Next-to-Next-to-Leading Order in QCD
• Where the electroweak phase transition ends
• Two-loop QCD gauge coupling at high temperatures
• LISA for Cosmologists: Calculating the Signal-to-Noise Ratio for Stochastic and Deterministic Sources
• Strong First Order Electroweak Phase Transition in the CP-Conserving 2HDM Revisited
• Dynamics of Two Higgs Doublet CP Violation and Baryogenesis at the Electroweak Phase Transition
• A Second Higgs Doublet in the Early Universe: Baryogenesis and Gravitational Waves
• The Inert Dark Matter
• Charged-Higgs phenomenology in the Aligned two-Higgs-doublet model
• A strong electroweak phase transition in the 2HDM after LHC8
• Phase transitions in the early universe
• Numerical Simulations of Gravitational Waves from Early-Universe Turbulence
• The Two Higgs Doublet of Type II facing flavour physics data
• The N2HDM under Theoretical and Experimental Scrutiny
• Towards B -> X_s gamma at the NNLO in QCD without interpolation in m_c
• On the validity of perturbative studies of the electroweak phase transition in the Two Higgs Doublet model
• Model-independent energy budget of cosmological first-order phase transitions
• What is the Criterion for a Strong First Order Electroweak Phase Transition in Singlet Models?
• Fingerprinting the extended Higgs sector using one-loop corrected Higgs boson couplings and future precision measurements
• The diphoton signal of the light Higgs boson in Natural NMSSM
• Precision decay rate calculations in quantum field theory
• Model-independent energy budget for LISA
• High Temperature Dimensional Reduction of the MSSM and other Multi-Scalar Models
• Singlet-assisted electroweak phase transition at two loops
• A 96 GeV Higgs Boson in the N2HDM
• Thermodynamics of a two-step electroweak phase transition
• Nonperturbative Analysis of the Electroweak Phase Transition in the Two Higgs Doublet Model
• On the perturbative expansion at high temperature and implications for cosmological phase transitions
• Bubble wall velocities in local equilibrium
• Bubble Growth as a Detonation
• Two Higgs doublet dynamics at the electroweak phase transition: a non-perturbative study
• Conformal model for gravitational waves and dark matter: A status update
• DRalgo: a package for effective field theory approach for thermal phase transitions
• Model-independent bubble wall velocities in local thermal equilibrium
• Pseudo-Goldstone dark matter confronts cosmic ray and collider anomalies
• The 96 GeV Diphoton Excess in the Seesaw Extensions of the Natural NMSSM
• Possible indications for new Higgs bosons in the reach of the LHC: N2HDM and NMSSM interpretations
• Bubble wall dynamics at the electroweak phase transition
• Thermal phase transition with full 2-loop effective potential
• Combining thermal resummation and gauge invariance for electroweak phase transition
• The CMS di-photon excess at 95 GeV in view of the LHC Run 2 results
• Light Signals from a Lighter Higgs
• BubbleDet: A Python package to compute functional determinants for bubble nucleation
• The 95.4 GeV di-photon excess at ATLAS and CMS
• Three-dimensional effective theories for the two Higgs doublet model at high temperature
• The Relevant Scale Parameter in the High Temperature Phase of QCD
• Supercool exit: Gravitational waves from QCD-triggered conformal symmetry breaking
• The trap in the early Universe: impact on the interplay between gravitational waves and LHC physics in the 2HDM
• Excesses in the low-mass Higgs-boson search and the W-boson mass measurement
• PhaseTracer: tracing cosmological phases and calculating transition properties
• Large $h\to bs$ in generic two-Higgs-doublet models
• Gravitational waves from supercooled phase transitions: dimensional transmutation meets dimensional reduction
• Higher-Order Corrections to the Bubble-Nucleation Rate at Finite Temperature
• The evolution of vacuum states and phase transitions in 2HDM during cooling of Universe
• Charge Induced Acceleration Noise in the LISA Gravitational Reference Sensor
• Bubble wall velocity during electroweak phase transition in the inert doublet model
• What the Oblique Parameters S, T, and U and Their Extensions Reveal About the 2HDM: A Numerical Analysis
• Strong first order electroweak phase transition in 2HDM confronting future Z & Higgs factories
• Scrutinizing the 95-100 GeV di-tau excess in the top associated process
• Gravitational Waves, Bubble Profile, and Baryon Asymmetry in the Complex 2HDM
• Collision Integrals for Cosmological Phase Transitions
• Bubble-wall velocity in local thermal equilibrium: hydrodynamical simulations vs analytical treatment
• Search for a lighter Higgs in Two Higgs Doublet Models
• Debye screening mass of hot Yang-Mills theory to three-loop order
• Gravitational wave and electroweak baryogenesis with two Higgs doublet models
• Bounds on the bubble wall velocity
• Finite-temperature bubble nucleation with shifting scale hierarchies
• Superposition of CP-Even and CP-Odd Higgs Resonances: Explaining the 95 GeV Excesses within a Two-Higgs Doublet Model
• Higher-dimensional operators at finite-temperature affect gravitational-wave predictions
• PhaseTracer2: from the effective potential to gravitational waves
• Light scalars within the $\mathcal{C}\mathcal{P}$-conserving Aligned-two-Higgs-doublet model
• When The Standard Model Higgs Meets Its Lighter 95 GeV Twin
• Primordial Black Holes and Gravitational Waves in the $U(1{)}_{B-L}$ Extended Inert Doublet Model: A First-Order Phase Transition Perspective
• Probing 95 GeV Higgs in the 2HDM Type-III

Cited by in corpus (4)

• Thermodynamical uncertainties for primordial black holes from cosmological phase transitions
• Revisiting Singlet Fermion Dark Matter with a Scalar Portal: Connecting Higgs Phenomenology and Strong Electroweak Phase Transition
• Hard thermal contributions to phase transition observables at NNLO
• Hot news on the phase structure of the SMEFT