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Physics of Atomic Nuclei

, Volume 71, Issue 1, pp 147–161 | Cite as

May heavy neutrinos solve underground and cosmic-ray puzzles?

  • K. M. BelotskyEmail author
  • D. Fargion
  • M. Yu. Khlopov
  • R. V. Konoplich
Elementary Particles and Fields Theory

Abstract

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.

PACS numbers

14.60.St 

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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • K. M. Belotsky
    • 1
    • 2
    Email author
  • D. Fargion
    • 3
    • 4
  • M. Yu. Khlopov
    • 1
  • R. V. Konoplich
    • 5
    • 6
  1. 1.Moscow Engineering Physics InstituteMoscowRussia
  2. 2.Center for Cosmoparticle Physics Cosmion of Keldysh Institute of Applied MathematicsMoscowRussia
  3. 3.Universita’ di Roma La Sapienza and INFNRomaItaly
  4. 4.INFN, Rome1RomaItaly
  5. 5.New York UniversityNew YorkUSA
  6. 6.Manhattan CollegeRiverdaleUSA

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