Published February 11, 1991 | Version v1
Journal article Metadata-only

Neutrino oscillations in the early universe

Creators

  • 1. Istituto Nazionale di Fisica Nucleare, Pisa (Italy)
  • 2. Pisa Univ. (Italy). Dipt. di Fisica
  • 3. Institut Teoreticheskoj i Ehksperimental'noj Fiziki, Moscow (USSR)

Description

We study the possible distortions of the evolution of the early universe caused by the oscillations of a standard neutrino (νe, νμ or ντ) into a light 'sterile' neutrino state, a gauge group singlet νs. The effects on the standard big bang nucleosynthesis are considered in the full space of the mixing parameters (δm2, sin 2θ). A significant portion of this parameter space is thereby excluded, or at least made highly improbable. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics B, Particle Physics
Journal Volume
349
Journal Issue
3
Series
Nucl. Phys. B, Part. Phys.
Journal Page Range
743-753
ISSN
0550-3213
CODEN
NUPBB

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
22053657
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ANNIHILATION; CONFIGURATION MIXING; COSMOLOGY; DENSITY MATRIX; DISTURBANCES; ELECTRON NEUTRINOS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; GRAND UNIFIED THEORY; IRREDUCIBLE REPRESENTATIONS; KINETIC EQUATIONS; KINETICS; LIE GROUPS; MUON NEUTRINOS; NEUTRINO OSCILLATION; NEUTRINO-NEUTRINO INTERACTIONS; NONLINEAR PROBLEMS; NUCLEOSYNTHESIS; PAIR PRODUCTION; POSITRONS; SCATTERING AMPLITUDES; TAU NEUTRINOS; THERMAL EQUILIBRIUM; UNIVERSE
Descriptors DEC
AMPLITUDES; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; ELEMENTARY PARTICLES; EQUATIONS; EQUILIBRIUM; FERMIONS; FIELD THEORIES; HEAVY LEPTONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATRICES; MATTER; NEUTRINOS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; QUANTUM FIELD THEORY; SYMMETRY GROUPS; SYNTHESIS; UNIFIED GAUGE MODELS