Possible violation of the spin-statistics relation for neutrinos: Cosmological and astrophysical consequences

  title={Possible violation of the spin-statistics relation for neutrinos: Cosmological and astrophysical consequences},
  author={Alexander Dolgov and Alexei Yu. Smirnov},
  journal={Physics Letters B},

Cosmological bounds on neutrino statistics

We consider the phenomenological implications of the violation of the Pauli exclusion principle for neutrinos, focusing on cosmological observables such as the spectrum of Cosmic Microwave Background

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We review the particle physics aspects of neutrino-less double beta decay. This process can be mediated by light massive Majorana neutrinos (standard interpretation) or by something else

Theory of neutrinoless double-beta decay

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Relativistic effective degrees of freedom and quantum statistics of neutrinos

Analytical expressions of the relativistic effective degrees of freedom $g_\ast$ with non-pure fermionic neutrinos are presented. A semi-analytical study is performed to show that $g_\ast$ with pure



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Neutrinos may possibly violate the spin-statistics theorem, and hence obey Bose statistics or mixed statistics despite having spin half. We find the generalized equilibrium distribution function of

Stringent constraints on cosmological neutrino-antineutrino asymmetries from synchronized flavor transformation

We assess a mechanism which can transform neutrino-antineutrino asymmetries between flavors in the early universe, and confirm that such transformation is unavoidable in the near bi-maximal framework

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The study of the neutrino has emerged as important in the elucidation of weak interactions, and possibly, for future theoretical descriptions of the physics of elementary particles. The authors aim

Bose condensates, big bang nucleosynthesis, and cosmological decay of a 17 keV neutrino.

  • Madsen
  • Physics
    Physical review letters
  • 1992
The erects are generic to early-Universe decay of fermions, not just of relevance for 17 keV neutrinos, and can form a Bose condensate, with interesting consequences for galaxy formation and the dark-matter problem.

Resonant absorption of cosmic-ray neutrinos by the relic-neutrino background

Within the framework of standard big-bang cosmology and the standard electroweak model, it is shown that ..nu..nu-bar annihilation on the Z resonance is the only cosmic-ray process sensitive to relic

Analytical treatment of neutrino asymmetry equilibration from flavor oscillations in the early universe

A recent numerical study by A. D. Dolgov, S. H. Hansen, S. Pastor, S. T. Petcov, G. G. Raffelt, and D. V. Semikoz (DHPPRS) [Nucl. Phys. B632, 363 (2002)] found that complete or partial equilibrium

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