Telling Three from Four Neutrinos with Cosmology
arXiv:astro-ph/0205238 · doi:10.1016/S0927-6505(02)00204-9
Abstract
New results, namely the independent determination of the deuterium abundance in several quasar absorption systems, and the complementary determination of the cosmological baryon density by observations of anisotropies in the cosmic microwave background (CMB), allow for a reevaluation of the constraints on the relativistic particle content of the universe at primordial nucleosynthesis. Expressed in terms of the neutrino energy density, we find 1.7 < N_ν< 3.5 (95% CL). In particular, we show that phenomenological four neutrino models including a sterile state (not participating in SU(2)_L x U(1)_Y interactions) unavoidably thermalize a fourth neutrino, and are highly disfavored in the standard minimal model of primordial nucleosynthesis, if the systematic uncertainty in the primordial helium abundance is small. We describe plausible extensions of the minimal model which evade this constraint.
17 pages, 2 figures; matches Astropart. Phys. version
References in corpus (28)
- 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
- Solar 8B and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
- Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
- Cosmic Microwave Background Anisotropies
- Cosmological bounds on neutrino degeneracy improved by flavor oscillations
- Neutrino Masses and Mixing: Evidence and Implications
- Final results from the Palo Verde Neutrino Oscillation Experiment
- Multiple Peaks in the Angular Power Spectrum of the Cosmic Microwave Background: Significance and Consequences for Cosmology
- Cosmological Parameter Extraction from the First Season of Observations with DASI
- Cosmological implications of the MAXIMA-I high resolution Cosmic Microwave Background anisotropy measurement
- Analytical treatment of neutrino asymmetry equilibration from flavour oscillations in the early universe
- Stringent Constraints on Cosmological Neutrino-Antineutrino Asymmetries from Synchronized Flavor Transformation
- A New Measurement of the Primordial Abundance of Deuterium: Toward Convergence with the Baryon Density from the CMB?
- Molecular hydrogen, deuterium and metal abundances in the damped Ly-alpha system at z = 3.025 toward QSO 0347-3819
- Neutrinos as the messengers of CPT violation
- Constraining neutrino physics with BBN and CMBR
- Stellar Mixing and the Primordial Lithium Abundance
- Primordial Nucleosynthesis with CMB Inputs: Probing the Early Universe and Light Element Astrophysics
- Update on neutrino mixing in the early Universe
- Status of four-neutrino mass schemes: a global and unified approach to current neutrino oscillation data
- Big Bang nucleosynthesis, matter-antimatter regions, extra relativistic species, and relic gravitational waves
- Blocking Active-Sterile Neutrino Oscillations in the Early Universe with a Majoron Field
- Constraints on Neutrino Degeneracy from the Cosmic Microwave Background and Primordial Nucleosynthesis
- Telling three from four neutrinos at the Neutrino Factory
- Systematic Uncertainties in the Determination of the Primordial 4He Abundance
- New HST spectra indicate the QSO PG1718+4807 will not give the primordial deuterium abundance
- Measuring the baryon content of the universe: BBN vs CMB
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- Cosmological parameters from SDSS and WMAP
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- Primordial Nucleosynthesis: from precision cosmology to fundamental physics
- CMB-S4 Science Case, Reference Design, and Project Plan
- Dark Energy from Mass Varying Neutrinos
- A White Paper on keV Sterile Neutrino Dark Matter
- Sterile neutrinos in cosmology
- Determining Neutrino Mass from the CMB Alone
- Neutrino masses and the number of neutrino species from WMAP and 2dFGRS
- A combined analysis of short-baseline neutrino experiments in the (3+1) and (3+2) sterile neutrino oscillation hypotheses
- Probing oscillations into sterile neutrinos with cosmology, astrophysics and experiments
- Constraints on Sterile Neutrino Dark Matter
- See-Saw Energy Scale and the LSND Anomaly
- Current cosmological bounds on neutrino masses and relativistic relics
- Interesting radiative patterns of neutrino mass in an SU(3)_C X SU(3)_L X U(1)_X model with right-handed neutrinos
- Naturally light right-handed neutrinos in a 3-3-1 Model
- Cosmological and astrophysical limits on brane fluctuations
- Weighing Neutrinos with Galaxy Cluster Surveys
- Cosmological Lepton Asymmetry, Primordial Nucleosynthesis, and Sterile Neutrinos
- First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino
- Phases of New Physics in the BAO Spectrum
- Simultaneous Flavor Transformation of Neutrinos and Antineutrinos with Dominant Potentials from Neutrino-Neutrino Forward Scattering
- Sterile neutrinos, lepton asymmetries, primordial elements: how much of each?
- Measuring the cosmological background of relativistic particles with WMAP
- Cosmological constraints on a light non-thermal sterile neutrino
- Is cosmology compatible with sterile neutrinos?
- Exploring a Non-Minimal Sterile Neutrino Model Involving Decay at IceCube and Beyond
- Late Time Neutrino Masses, the LSND Experiment and the Cosmic Microwave Background
- Light Element Signatures of Sterile Neutrinos and Cosmological Lepton Numbers
- MiniBooNE Results and Neutrino Schemes with 2 sterile Neutrinos: Possible Mass Orderings and Observables related to Neutrino Masses
- Sterile neutrino production in models with low reheating temperatures
- KeV right-handed neutrinos from type II seesaw mechanism in a 3-3-1 model
- Neutrino Mass-An Overview
- Are Light Sterile Neutrinos Preferred or Disfavored by Cosmology?
- Addendum to: Update on neutrino mixing in the early Universe
- Cosmological neutrino bounds for non-cosmologists
- Chiral Gauge Models for Light Sterile Neutrinos
- Avoiding BBN Constraints on Mirror Models for Sterile Neutrinos
- Neutrino Physics (theory)
- Neutrino Oscillations in Deconstructed Dimensions
- Probing nonstandard neutrino cosmology with terrestrial neutrino experiments
- MiniBooNE and Sterile Neutrinos
- Light Sterile Neutrinos in the Supersymmetric U(1)' Models and Axion Models
- Chaos, Determinacy and Fractals in Active-Sterile Neutrino Oscillations in the Early Universe
- Searches for sterile neutrinos (and other light particles)
- Neutrinos in Astrophysics and Cosmology: Theoretical Advanced Study Institute (TASI) 2020 Lectures
- Invisible Z decay width bounds on active-sterile neutrino mixing in the (3+1) and (3+2) models
- The effect of primordial fluctuations on neutrino oscillations
- Neutrino Mixing and Cosmology
- Neutrino physics from Cosmology