Boomerang mechanism explaining the excess radio background

Abstract

We propose a boomerang mechanism for the explanation of the excess radio background detected by ARCADE 2. In an early stage of the Universe, at a temperature $T$ in the range $\sim 0.1\mathrm{keV}$--$1\mathrm{MeV}$, a fraction of relic neutrinos is resonantly converted into dark neutrinos by mixing induced by a pre-existing lepton asymmetry. Dark neutrinos decay much later into a dark-standard photon state and a dark fermion, with a lifetime longer than the age of the Universe, as required by a solution to the excess radio background. This scenario circumvents the upper bound on the neutrino magnetic moment but still implies a testable lower bound.

arXiv comment9 pages, 4 figures; v3: matches version published in PRD;

References in corpus (50)

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• The Temperature of the Cosmic Microwave Background
• Solar 8B and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Cosmological bounds on neutrino degeneracy improved by flavor oscillations
• Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos
• ARCADE 2 Measurement of the Extra-Galactic Sky Temperature at 3-90 GHz
• Dark photon limits: a handbook
• Updated MiniBooNE Neutrino Oscillation Results with Increased Data and New Background Studies
• Axion and neutrino bounds improved with new calibrations of the tip of the red-giant branch using geometric distance determinations
• Search for sterile neutrinos in MINOS and MINOS+ using a two-detector fit
• Results from the Baksan Experiment on Sterile Transitions (BEST)
• Large neutrino asymmetries from neutrino oscillations
• Pseudo-Dirac Neutrinos, a Challenge for Neutrino Telescopes
• Microwave Background Constraints on Mixing of Photons with Hidden Photons
• Probing BSM Neutrino Physics with Flavor and Spectral Distortions: Prospects for Future High-Energy Neutrino Telescopes
• The Radio Background Below 100 MHz
• Dark Photon Oscillations in Our Inhomogeneous Universe
• Pseudo-Dirac Neutrinos in the New Standard Model
• Exploring the robustness of stellar cooling constraints on light particles
• Reconciling the CAST and PVLAS Results
• Fundamental physics with the diffuse supernova background neutrinos
• Pseudo-Dirac Scenario for Neutrino Oscillations
• Imprints of Spinning Particles on Primordial Cosmological Perturbations
• Indications for a Nonzero Lepton Asymmetry from Extremely Metal-Poor Galaxies
• The Radio Synchrotron Background: Conference Summary and Report
• Effective photon mass and (dark) photon conversion in the inhomogeneous Universe
• Probing relic neutrino decays with 21 cm cosmology
• Quasi Dirac neutrino oscillations
• Active-Sterile neutrino oscillations and BBN+CMBR constraints
• The unusual smoothness of the extragalactic unresolved radio background
• Naturally Light Dirac and Pseudo-Dirac Neutrinos from Left-Right Symmetry
• SN1987A still shining: A Quest for Pseudo-Dirac Neutrinos
• Soft logarithms in processes with heavy quarks
• Neutrino Electromagnetic Properties
• The EDGES signal: An imprint from the mirror world?
• Revisiting pseudo-Dirac neutrino scenario after recent solar neutrino data
• Probing Pseudo-Dirac Neutrinos with Astrophysical Sources at IceCube
• Active-sterile neutrino oscillations in the early Universe: asymmetry generation at low |delta m^2| and the Landau-Zener approximation
• DUNE potential as a New Physics probe
• A search for an eV-scale sterile neutrino using improved high-energy ${\nu }_{\mu }$ event reconstruction in IceCube
• $pp$ Solar Neutrinos at DARWIN
• Constraining super-light sterile neutrinos at Borexino and KamLAND
• Relic neutrino decay solution to the excess radio background
• Pseudo-Dirac Neutrinos and Relic Neutrino Matter Effect on the High-energy Neutrino Flavor Composition
• Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations in NOvA
• Constraining the pseudo-Dirac nature of neutrinos using astrophysical neutrino flavor data
• A Large Twist Limit for Any Operator
• The optical system of the Tenerife Microwave Spectrometer: a window for observing the 10-20 GHz sky spectra