Baryogenesis and Gravitational Waves from Runaway Bubble Collisions

Abstract

We propose a novel mechanism for production of baryonic asymmetry in the early Universe. The mechanism takes advantage of the strong first order phase transition that produces runaway bubbles in the hidden sector that propagate almost without friction with ultra-relativistic velocities. Collisions of such bubbles can non-thermally produce heavy particles that further decay out-of-equilibrium into the SM and produce the observed baryonic asymmetry. This process can proceed at the very low temperatures, providing a new mechanism of post-sphaleron baryogenesis. In this paper we present a fully calculable model which produces the baryonic asymmetry along these lines as well as evades all the existing cosmological constraints. We emphasize that the Gravitational Waves signal from the first order phase transition is completely generic and can potentially be detected by the future eLISA interferometer. We also discuss other potential signals, which are more model dependent, and point out the unresolved theoretical questions related to our proposal.

30 pages, 8 figures. v2: typos fixed and references added v3: discussion regarding the lifetime of the dark Z's fixed and the discussion on their relic abundance is removed, minor corrections, and references added. Conclusions are intact. Accepted to JCAP

References in corpus (58)

• Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions
• Echoes of a Hidden Valley at Hadron Colliders
• Electroweak baryogenesis
• Recent Progress in Baryogenesis
• Energy Budget of Cosmological First-order Phase Transitions
• Towards the Theory of Cosmological Phase Transitions
• Science with the space-based interferometer eLISA. I: Supermassive black hole binaries
• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• Endpoint of the hot electroweak phase transition
• Exotic Decays of the 125 GeV Higgs Boson
• Gravitational Waves From a Dark (Twin) Phase Transition
• Discovering the Higgs Through Highly-Displaced Vertices
• Testing Electroweak Baryogenesis with Future Colliders
• Can electroweak bubble walls run away?
• Dynamics of Non-renormalizable Electroweak Symmetry Breaking
• Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS
• Novel Effects in Electroweak Breaking from a Hidden Sector
• Darkogenesis
• Where the electroweak phase transition ends
• Bounds on $\Delta B=1$ Couplings in the Supersymmetric Standard Model
• Cosmological Consequences of Nearly Conformal Dynamics at the TeV scale
• Some Cosmological Implications of Hidden Sectors
• Non-local Electroweak Baryogenesis Part I : Thin Wall Regime
• Non-local Electroweak Baryogenesis Part II : The Classical Regime
• Detection of gravitational waves from the QCD phase transition with pulsar timing arrays
• A unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures
• Hearing the signals of dark sectors with gravitational wave detectors
• The Baryon asymmetry in the Standard Model with a low cut-off
• Quantum Transport and Electroweak Baryogenesis
• Production of Gravitational Waves in the nMSSM
• Discovering Uncolored Naturalness in Exotic Higgs Decays
• Bubbles in the supersymmetric standard model
• The endpoint of the first-order phase transition of the SU(2) gauge-Higgs model on a 4-dimensional isotropic lattice
• Bubble Expansion and the Viability of Singlet-Driven Electroweak Baryogenesis
• Leptogenesis in the Universe
• Search for pair-produced resonances decaying to jet pairs in proton-proton collisions at sqrt(s) = 8 TeV
• Higgs Couplings and Electroweak Phase Transition
• A WIMPy Baryogenesis Miracle
• Baryogenesis for WIMPs
• What's new with the electroweak phase transition?
• Possible Effects of a Hidden Valley on Supersymmetric Phenomenology
• Baryogenesis from Strong CP Violation and the QCD Axion
• Non-thermal Dark Matter Production from the Electroweak Phase Transition: Multi-TeV WIMPs and "Baby-Zillas"
• Natural Cold Baryogenesis from Strongly Interacting Electroweak Symmetry Breaking
• Electroweak Baryogenesis and Higgs Signatures
• Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies
• The Fate of Long-Lived Superparticles with Hadronic Decays after LHC Run 1
• A TeV Scale Model for Baryon and Lepton Number Violation and Resonant Baryogenesis
• Search for Neutron-Antineutron Oscillations Using Multiprong Events in Soudan 2
• Bounds on $\Delta B=1$ Couplings in the Supersymmetric Standard Model
• Unified TeV Scale Picture of Baryogenesis and Dark Matter
• The Dark Side of the Electroweak Phase Transition
• Limiting First Order Phase Transitions in Dark Gauge Sectors from Gravitational Waves experiments
• Towards a No-Lose Theorem for Naturalness
• Pulling Out All the Stops: Searching for RPV SUSY with Stop-Jets
• Theories of Baryogenesis
• A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in $\sqrt{s}$ = 8 TeV proton-proton collisions
• Evolution of the Order Parameter after Bubble Collisions

Cited by in corpus (38)

• Electroweak Bubble Wall Speed Limit
• Cosmic phase transitions: their applications and experimental signatures
• Electroweak baryogenesis and gravitational waves from a real scalar singlet
• The Gravitational-Wave Physics
• Towards an all-orders calculation of the electroweak bubble wall velocity
• Friction pressure on relativistic bubble walls
• Phase transition and gravitational wave phenomenology of scalar conformal extensions of the Standard Model
• Phase transition and vacuum stability in the classically conformal B-L model
• The Supercooled Universe
• Gravitational waves and electroweak baryogenesis in a global study of the extended scalar singlet model
• Gravitational wave probes of dark matter: challenges and opportunities
• Non-resonant Collider Signatures of a Singlet-Driven Electroweak Phase Transition
• Hearing without seeing: gravitational waves from hot and cold hidden sectors
• String Fragmentation in Supercooled Confinement and Implications for Dark Matter
• Leptogenesis triggered by a first-order phase transition
• Gravitational waves from the asymmetric-dark-matter generating phase transition
• Ultra-relativistic bubbles from the simplest Higgs portal and their cosmological consequences
• Electroweak baryogenesis from a dark sector
• Primordial black holes as dark matter: Interferometric tests of phase transition origin
• On the origin of matter in the Universe
• Probing Early Universe Supercooled Phase Transitions with Gravitational Wave Data
• Glueballs in a Thermal Squeezeout Model
• Testing Dark Matter Models with Radio Telescopes in light of Gravitational Wave Astronomy
• Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition
• High Energy Sphalerons for Baryogenesis at Low Temperatures
• Interacting Holographic Dark Energy, the Present Accelerated Expansion and Black Holes
• Phase Transitions and Baryogenesis From Decays
• Bubbletrons: Ultrahigh-Energy Particle Collisions and Heavy Dark Matter at Phase Transitions
• Let Effective Field Theory of Inflation flow: stochastic generation of models with red/blue tensor tilt
• Measuring the Energy Scale of Inflation with Large Scale Structures
• On Particle Production from Phase Transition Bubbles
• Q-holes
• Instability of the Electroweak Vacuum in Starobinsky Inflation
• Gravitational effects on fluid dynamics in cosmological first-order phase transitions
• Gravitational waves from patterns of electroweak symmetry breaking: an effective perspective
• Baryogenesis via relativistic bubble expansion
• Baryogenesis via relativistic bubble walls
• The Discovery Potential of Space-Based Gravitational Wave Astronomy