Thermal Production of Massless Dark Photons
arXiv:2212.09755 · doi:10.1088/1475-7516/2023/07/035
Abstract
A dark photon is predicted by several well-motivated Standard Model extensions and UV completions. Here the most general effective field theory up to dimension-six operators describing the interactions of a massless dark photon with all Standard Model particles is considered. This captures the predictions of a generic model featuring this type of vector boson at sufficiently low energies. In such framework the thermal production rate of dark photons is computed at leading order, including the contributions of all SM particles. The corresponding cosmological yield of the dark photon and its contribution to the effective number of neutrinos are also calculated. These predictions satisfy the current observational bounds and will be tested by future measurements.
arXiv comment16 pages, 4 figures; v2: comments on the validity of these calculations for massive dark photons added, published version
References in corpus (32)
- The Dark Photon
- Naturally Light Hidden Photons in LARGE Volume String Compactifications
- Towards a precision calculation of in the Standard Model II: Neutrino decoupling in the presence of flavour oscillations and finite-temperature QED
- Dissipative hidden sector dark matter
- Agravity
- Kinetic Mixing of the Photon with Hidden U(1)s in String Phenomenology
- Neutrino decoupling including flavour oscillations and primordial nucleosynthesis
- A precision calculation of relic neutrino decoupling
- Direct Detection Constraints on Dark Photon Dark Matter
- The anthropic principle and the mass scale of the Standard Model
- Dark Radiation constraints on minicharged particles in models with a hidden photon
- Mirror World and its Cosmological Consequences
- Massive hidden photons as lukewarm dark matter
- Thermal axion production
- Brane-Antibrane Kinetic Mixing, Millicharged Particles and SUSY Breaking
- Massless Gauge Bosons other than the Photon
- Illuminating the Hidden Sector of String Theory by Shining Light through a Magnetic Field
- Cosmological Constraints on Very Dark Photons
- Signatures of a hidden cosmic microwave background
- A New Class of Ghost and Tachyon Free Metric Affine Gravities
- Towards a precision calculation of the effective number of neutrinos in the Standard Model I: The QED equation of state
- Towards leptogenesis at NLO: the right-handed neutrino interaction rate
- Metric-Affine Gravity as an Effective Field Theory
- Thermal axion production at low temperatures: a smooth treatment of the QCD phase transition
- Gravitational Waves from Fundamental Axion Dynamics
- Cosmological bounds on the "millicharges" of mirror particles
- Torsion Phenomenology at the LHC
- Cosmological Constraint on Dark Photon from
- Dark radiation constraints on portal interactions with hidden sectors
- Direct anthropic bound on the weak scale from supernovae explosions
- A Fundamental QCD Axion Model
- Dark Photon as Fractional Cosmic Neutrino Masquerader