Gravitational Wave Pathway to Testable Leptogenesis

Abstract

We analyze the classically scale-invariant $B-L$ model in the context of resonant leptogenesis with the recently proposed mass-gain mechanism. The $B-L$ symmetry breaking in this scenario is associated with a strong first order phase transition that gives rise to detectable gravitational waves (GWs) via bubble collisions. The same $B-L$ symmetry breaking also gives Majorana mass to right-handed neutrinos inside the bubbles, and their out of equilibrium decays can produce the observed baryon asymmetry of the Universe via leptogenesis. We show that the current LIGO-VIRGO limit on stochastic GW background already excludes part of the $B-L$ parameter space, complementary to the collider searches for heavy $Z^{\prime }$ resonances. Moreover, future GW experiments like Einstein Telescope and Cosmic Explorer can effectively probe the parameter space of leptogenesis over a wide range of the $B-L$ symmetry-breaking scales and gauge coupling values.

11 pages, 3 figures and 2 tables,version to appear in PRD

References in corpus (21)

• Exploring the Sensitivity of Next Generation Gravitational Wave Detectors
• Leptogenesis
• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• Conformal Symmetry and the Standard Model
• A solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory
• Novel Effects in Electroweak Breaking from a Hidden Sector
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance
• Detecting High-Frequency Gravitational Waves with Microwave Cavities
• A unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures
• Shadow Higgs from a scale-invariant hidden $U(1{)}_s$ model
• Neutrino mass in radiatively-broken scale-invariant models
• Gravitational waves and Higgs boson couplings for exploring first order phase transition in the model with a singlet scalar field
• Gravitational waves from the minimal gauged $U(1{)}_{B-L}$ model
• Doubly peaked induced stochastic gravitational wave background : Testing baryogenesis from primordial black holes
• Leptogenesis triggered by a first-order phase transition
• Neutrinos, Axions and Conformal Symmetry
• Cosmological Signatures of a UV-Conformal Standard Model
• Radiative Plateau Inflation with Conformal Invariance: Dynamical Generation of Electroweak and Seesaw Scales
• Probing High Scale Dirac Leptogenesis via Gravitational Waves from Domain Walls
• Baryogenesis via relativistic bubble walls

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• Gravitational wave signatures of PBH-generated baryon-dark matter coincidence
• Signatures of Non-thermal Dark Matter with Kination and Early Matter Domination: Gravitational Waves versus Laboratory Searches
• PBH-infused seesaw origin of matter and unique gravitational waves
• Gravitational Waves-Tomography of Low-Scale-Leptogenesis
• PeV-scale leptogenesis, gravity waves and black holes from a SUSY-breaking phase transition
• Gravitational wave signals from leptoquark-induced first order electroweak phase transitions
• Fate of the false vacuum in string-inspired nonlocal field theory
• Probing intermediate scale Froggatt-Nielsen models at future gravitational wave observatories