Search for an admixture of heavy neutrinos in the beta-decay of241Pu
- 1 September 1999
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear and Particle Physics
- Vol. 25 (9) , 1839-1858
- https://doi.org/10.1088/0954-3899/25/9/307
Abstract
The -spectrum of 241Pu with the endpoint energy of 20.8 keV was measured in the energy range from 0.2 to 9.2 keV. The spectra were recorded during 5700 h with an electrostatic spectrometer set to a resolution of E/E = 0.011. Electron energy losses within the radioactive source were treated by means of extensive Monte Carlo simulations of individual elastic and inelastic electron collisions. The upper limit for the admixture of hypothetical neutrinos with the rest masses between 14 and 17 keV/c2 was derived to be less than 0.40% (the lowest limit being 0.10% for the 16 keV/c2 mass) at the 95% C.L., independently of any free phenomenological parameter.Keywords
This publication has 29 references indexed in Scilit:
- On the physics of massive neutrinosPhysics Reports, 1998
- Review of Particle PhysicsThe European Physical Journal C, 1998
- The 17 keV neutrinoPhysics Reports, 1996
- Results of the troitsk experiment on the search for the electron antineutrino rest mass in tritium beta-decayPhysics Letters B, 1995
- The appearance and disappearance of the 17-keV neutrinoReviews of Modern Physics, 1995
- No 17 keV neutrino: Admixture < 0.073% (95% C.L.)Physical Review D, 1993
- Improved limit on the electron-antineutrino rest mass from tritium β-decayPhysics Letters B, 1993
- Internal Conversion-Electron SpectroscopyPublished by Elsevier ,1983
- General theory of weak processes involving neutrinos. I. Leptonic pseudoscalar-meson decays, with associated tests for, and bounds on, neutrino masses and lepton mixingPhysical Review D, 1981
- New tests for and bounds on neutrino masses and lepton mixingPhysics Letters B, 1980