Published May 15, 1991
| Version v1
Journal article
New cosmological limit on neutrino mass
Creators
- 1. Physics Department, University of California, San Diego, California 92093 (USA)
- 2. Institute of Geophysics and Planetary Physics, University of California, Lawrence Livermore National Laboratory, Livermore, California 94550 (USA)
Description
We show that considerations of the equilibration of right- and left-handed neutrino seas in the early Universe and the well-known 4He constraint on the number of relativistic degrees of freedom extant at the nucleosynthesis epoch lead to a new limit on the Dirac neutrino mass of mν much-lt 300 keV. This constraint would apply to any neutrino so long as it had a purely Dirac mass and a lifetime exceeding the nucleosynthesis time scale
Additional details
Publishing Information
- Journal Title
- Physical Review, D
- Journal Volume
- 43
- Journal Issue
- 10
- Series
- Phys. Rev., D.
- Journal Page Range
- 3136-3139
- ISSN
- 0556-2821
- CODEN
- PRVDA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22074712
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- COSMOLOGICAL MODELS; DEGREES OF FREEDOM; HELIUM 4; LIMITING VALUES; NEUTRINOS; NUCLEOSYNTHESIS; ORIGIN; REST MASS
- Descriptors DEC
- ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; FERMIONS; HELIUM ISOTOPES; ISOTOPES; LEPTONS; LIGHT NUCLEI; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUCLEI; STABLE ISOTOPES; SYNTHESIS