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May heavy neutrinos solve underground and cosmic-ray puzzles?
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 rayExpand
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Invisible Higgs boson decay into massive neutrinos of fourth generation
Results from several recent experiments provide indirect evidences in the favor of existence of a 4th generation neutrino. Such a neutrino of mass m about 50 GeV is compatible with current physicalExpand
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On the classical description of the recombination of dark matter particles with a Coulomb-like interaction
Abstract Cold dark matter (DM) scenario may be cured of several problems by involving self-interaction of dark matter. Viability of the models of long-range interacting DM crucially depends on theExpand
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Clusters of Primordial Black Holes
The Primordial Black Holes (PBHs) are a well-established probe for new physics in the very early Universe. We discuss here the possibility of PBH agglomeration into clusters that may have severalExpand
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Heavy hadrons of 4th family hidden in our Universe and close to detection
a Centre for CosmoParticle Physics “Cosmion”, 125047 Moscow, Russia; Moscow Engineering Physics Institute, 115409 Moscow, Russia b Physics department, Universita degli studi “La Sapienza”, PiazzaleExpand
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Signatures of primordial black hole dark matter
The nonbaryonic dark matter of the Universe is assumed to consist of new stable forms of matter. Their stability reflects symmetry of micro world and mechanisms of its symmetry breaking. In the earlyExpand
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Electromagnetic probes of primordial black holes as dark matter.
The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. Such suggestions came from 1) the observed mergerExpand
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Decaying Dark Atom constituents and cosmic positron excess
We present a scenario where dark matter is in the form of dark atoms that can accomodate the experimentally observed excess of positrons in PAMELA and AMS-02 while being compatible with theExpand
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Monochromatic neutrinos from the annihilation of fourth-generation massive stable neutrinos in the Sun and in the Earth
The accumulation of relic fourth-generation heavy neutrinos (of mass 50 GeV) in the Earth and the Sun, which is followed by their annihilation, is considered. The most conservative estimates of theExpand
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