On the neutrino mass, the abundance of right-handed neutrinos and the closeness of the universe.
Abstract
Starting from the experimentally determined mass of the electron neutrino, it is pointed out that neutrinos account for 99% of the total mass, leading to a closed universe. The neutrinos in the universe are also pointed out to have to be mainly of the left-handed type, in order to agree with observations over a wide range. The upper limit of the sum of neutrino masses given by cosmology is shown to be 200 eV rather than the usual 40 eV.
- Publication:
-
Acta Astrophysica Sinica
- Pub Date:
- 1981
- Bibcode:
- 1981AcApS...1....9Q
- Keywords:
-
- Abundance;
- Big Bang Cosmology;
- Handedness;
- Neutrinos;
- Particle Mass;
- Universe;
- Dirac Equation;
- Hubble Constant;
- Neutron Flux Density;
- Thermodynamic Equilibrium;
- Astrophysics;
- Neutrinos:Universe