May heavy neutrinos solve underground and cosmic-ray puzzles?
- Moscow Engineering Physics Institute (Russian Federation), E-mail: k-belotsky@yandex.ru
- Universita' di Roma La Sapienza and INFN (Italy), E-mail: daniele.fargion@roma1.infn.it
- Moscow Engineering Physics Institute (Russian Federation), E-mail: maxim.khlopov@roma1.infn.it
- New York University (United States), E-mail: rk60@nyu.edu
Primordial heavy neutrinos of the fourth generation might explain different astrophysical puzzles. The simplest fourth-neutrino scenario is consistent with known fourth-neutrino physics, cosmic ray antimatter, cosmic gamma fluxes, and positive signals in underground detectors for a very narrow neutrino mass window (46-47 GeV). However, accounting for the constraint of underground experiment CDMS prohibits solution of cosmic-ray puzzles in this scenario. We have analyzed extended heavy-neutrino models related to the clumpiness of neutrino density, new interactions in heavy-neutrino annihilation, neutrino asymmetry, and neutrino decay. We found that, in these models, the cosmic-ray imprint may fit the positive underground signals in DAMA/Nal experiment in the entire mass range 46-70 GeV allowed from uncertainties of electroweak parameters, while satisfaction of the CDMS constraint reduces the mass range to around 50 GeV, where all data can come to consent in the framework of the considered hypothesis.
- OSTI ID:
- 21077561
- Journal Information:
- Physics of Atomic Nuclei, Vol. 71, Issue 1; Other Information: DOI: 10.1007/s11450-008-1016-9; Copyright (c) 2008 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
- Country of Publication:
- United States
- Language:
- English
Similar Records
The puzzles of dark matter searches
Physics with a High Intensity Proton Source at Fermilab: Project X Golden Book