Electroweak baryogenesis by axionlike dark matter
arXiv:2111.01327 · doi:10.1103/PhysRevD.105.035028
Abstract
We show that an axionlike particle (ALP) naturally implements spontaneous electroweak baryogenesis through a cosmic evolution strongly tied to the electroweak phase transition (EWPT) if it feebly couples to the Higgs field while giving a small contribution to the Higgs boson mass. The observed baryon asymmetry can be generated successfully if the ALP couples strongly enough to the electroweak anomaly. Also interesting is that the ALP contributes to dark matter, and its coupling to a hidden gauge sector makes the relic abundance insensitive to the cosmic history before the EWPT. The ALP explains both the baryon asymmetry and dark matter in a wide range of the couplings owing to the friction induced by the hidden gauge sector. To be compatible with cosmological and astrophysical observations, the ALP should have a mass in the range between about 0.01 and 30 eV, and is further required to be photophobic if its coupling to the electroweak anomaly is strong, constraining the field content and charge assignment of the UV completion.
arXiv comment8 pages, 4 figures, v3: matches published version
References in corpus (30)
- Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
- New CAST Limit on the Axion-Photon Interaction
- Test of the Equivalence Principle Using a Rotating Torsion Balance
- Cosmological Relaxation of the Electroweak Scale
- Revisiting the bound on axion-photon coupling from Globular Clusters
- The Sphaleron Rate in the Minimal Standard Model
- Stellar cooling bounds on new light particles: plasma mixing effects
- Constraining Light Dark Matter with Diffuse X-Ray and Gamma-Ray Observations
- A Clockwork Axion
- Cosmological bounds on pseudo Nambu-Goldstone bosons
- Realizing the relaxion from multiple axions and its UV completion with high scale supersymmetry
- The Standard Model cross-over on the lattice
- MICROSCOPE mission: first constraints on the violation of the weak equivalence principle by a light scalar dilaton
- Supersymmetric Electroweak Baryogenesis
- Recent Progress in the Physics of Axions and Axion-Like Particles
- Phenomenology of relaxion-Higgs mixing
- Strong Sphalerons and Electroweak Baryogenesis
- The Photophobic ALP
- Constraints on Decaying Dark Matter from the Isotropic Gamma-Ray Background
- Motion of Chern-Simons Number at High Temperature Under a Chemical Potential
- Coherent relaxion dark matter
- Dark Energy Radiation
- Cosmological Aspects of Spontaneous Baryogenesis
- Constraints on Relaxion Windows
- Adiabatic Electroweak Baryogenesis Driven by an Axion-like Particle
- Axionic Electroweak Baryogenesis
- All-in-one Relaxion, a unified solution to five BSM puzzles
- Relaxion Dark Matter
- Freeze-in Axion-like Dark Matter
- Out-of-the-box Baryogenesis During Relaxation