arXiv subjects

Eugeni Akhmedov

Publications and source records attributed to Eugeni Akhmedov.

4 recordsLinked to original sources

arXiv1992

17 keV neutrino and large magnetic moment solution of the solar neutrino puzzle

Zee-type models with Majorons naturally incorporate the 17 keV neutrino but in their minimal version fail to simultaneously solve the solar neutrino puzzle. If there is a sterile neutrino state, we find a particularly simple solution to the solar neutrino problem, which besides $ν_{17}$ predicts a light Zeldovich-Konopinski-Mahmoud neutrino $ν_{light}=ν_e+ν_μ^c$ with a magnetic moment being easily as large as $10^{-11}μ_B$ through the Barr-Freire-Zee mechanism.

hep-ph↗

arXiv1992

Planck scale effects in neutrino physics

We study the phenomenology and cosmology of the Majoron (flavon) models of three active and one inert neutrino paying special attention to the possible (almost) conserved generalization of the Zeldovich-Konopinski-Mahmoud lepton charge. Using Planck scale physics effects which provide the breaking of the lepton charge, we show how in this picture one can incorporate the solutions to some of the central issues in neutrino physics such as the solar and atmospheric neutrino puzzles, dark matter and a 17 keV neutrino. These gravitational effects induce tiny Majorana mass terms for neutrinos and considerable masses for flavons. The cosmological demand for the sufficiently fast decay of flavons implies a lower limit on the electron neutrino mass in the range of 0.1-1 eV.

hep-ph↗

arXiv1992

Planck-Scale Physics and Neutrino Masses

We discuss gravitationally induced masses and mass splittings of Majorana, Zeldovich-Konopinski-Mahmoud and Dirac neutrinos. Among other implications, these effects can provide a solution of the solar neutrino puzzle. In particular, we show how this may work in the 17 keV neutrino picture.

hep-ph↗

arXiv1992

Resonant Spin-Flavor Precession of Neutrinos As a Possible Solution to the Solar Neutrino Problem

Recent developments of the resonant neutrino spin-flavor precession scenario and its applications to the solar neutrino problem are reviewed. We discuss in particular the possibilities of reconciliation of strong time variations of the solar neutrino flux observed in the Homestake ${}^{37}\$Cl experiment with little or no time variation seen in the Kamiokande II experiment.

hep-ph↗