Statistics of neutrinos and the double beta decay

Barabash, A. S.; Dolgov, A. D.; Dvornický, R.; Šimkovic, F.; Smirnov, A. Yu.

doi:10.1016/j.nuclphysb.2007.05.033

Cited by 53 publications

(68 citation statements)

References 52 publications

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“…Possible violation of spin statistics and the cosmological constraints on it were also explored [19,20].…”

Section: Deviations From Fermi-dirac Distributionmentioning

confidence: 99%

Neutrinos from the Early Universe and physics beyond standard models

Kirilova

2014

Open Physics

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Neutrino oscillations present the only robust example of experimentally detected physics beyond the standard model. This review discusses the established and several hypothetical beyond standard models neutrino characteristics and their cosmological e ects and constraints. Particularly, the contemporary cosmological constraints on the number of neutrino families, neutrino mass di erences and mixing, lepton asymmetry in the neutrino sector, neutrino masses, light sterile neutrino are brie y reviewed.

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“…Possible violation of spin statistics and the cosmological constraints on it were also explored [19,20].…”

Section: Deviations From Fermi-dirac Distributionmentioning

confidence: 99%

Neutrinos from the Early Universe and physics beyond standard models

Kirilova

2014

Open Physics

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“…A change of neutrino statistics would have an impact on the evolution of supernovae and on the spectra of supernova neutrinos. The Pauli principle violation for neutrinos can be tested in the 2νββ-decay [4,5].…”

Section: The Violation Of Pauli Exclusion Principle For Neutrinosmentioning

confidence: 99%

“…For the 2νββ-decay of 76 Ge and 100 M o results of numerical calculations of the total rates and various distributions were presented in [5].…”

Section: Introductionmentioning

confidence: 99%

Nuclear and particle physics aspects of the 2νββ-decay of [sup 150]Nd

Dvornický¹,

Šimkovic²,

Faessler³

2007

AIP Conference Proceedings

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A discussion is given on possible realization of the Single State Dominance (SSD) hypothesis in the case of the two-neutrino double beta decay (2νββ-decay) of 150 N d with 1 − ground state of the intermediate nucleus. We conclude that the SSD hypothesis is expected to be ruled out by precision measurement of differential characteristics of this process in running NEMO 3 or planed SuperNEMO experiments unlike some unknown low-lying 1 + state of 150 P m does exist. This problem can be solved via (d, 2 He) charge-exchange experiment on 150 Sm. Further, we address the question about possible violation of the Pauli exclusion principle for neutrinos and its consequences for the energy distributions of the 2νββ-decay of 150 N d. This phenomenon might be a subject of interest of NEMO 3 and SuperNEMO experiments as well.

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“…This is the case, for instance, of neutral leptons such as neutrinos. However, contrary to the case of electrons and nucleons, a possible violation of the Pauli exclusion principle for neutrinos is not yet experimentally excluded, although it affects elementary processes which involve identical neutrinos, such as double beta decay [6,7]. Such a violation was discussed in a series of theoretical papers, although no satisfactory model has been proposed so far (more discussion in [6] and references therein).…”

Section: Introductionmentioning

confidence: 99%

Cosmological bounds on neutrino statistics

Salas

Gariazzo

Laveder

et al. 2018

J. Cosmol. Astropart. Phys.

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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 anisotropies, Baryon Acoustic Oscillations and the primordial abundances of light elements. Neutrinos that behave (at least partly) as bosonic particles have a modified equilibrium distribution function that implies a different influence on the evolution of the Universe that, in the case of massive neutrinos, can not be simply parametrized by a change in the effective number of neutrinos. Our results show that, despite the precision of the available cosmological data, only very weak bounds can be obtained on neutrino statistics, disfavouring a more bosonic behaviour at less than 2σ.

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Statistics of neutrinos and the double beta decay

Cited by 53 publications

References 52 publications

Neutrinos from the Early Universe and physics beyond standard models

Neutrinos from the Early Universe and physics beyond standard models

Nuclear and particle physics aspects of the 2νββ-decay of [sup 150]Nd

Cosmological bounds on neutrino statistics

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