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Gerbino, M. et al; Martinez-Mirave, P.; Mena, O.; Tortola, M.; Valle, J.W. . |
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Title |
Synergy between cosmological and laboratory searches in neutrino physics |
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Journal Article |
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Year |
2023 |
Publication |
Physics of the Dark Universe |
Abbreviated Journal |
Phys. Dark Universe |
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Volume  |
42 |
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Pages |
101333 - 36pp |
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Keywords |
Neutrinos; Cosmology; Neutrino phenomenology |
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Abstract |
The intersection of the cosmic and neutrino frontiers is a rich field where much discovery space still remains. Neutrinos play a pivotal role in the hot big bang cosmology, influencing the dynamics of the universe over numerous decades in cosmological history. Recent studies have made tremendous progress in understanding some properties of cosmological neutrinos, primarily their energy density. Upcoming cosmological probes will measure the energy density of relativistic particles with higher precision, but could also start probing other properties of the neutrino spectra. When convolved with results from terrestrial experiments, cosmology can become even more acute at probing new physics related to neutrinos or even Beyond the Standard Model (BSM). Any discordance between laboratory and cosmological data sets may reveal new BSM physics and/or suggest alternative models of cosmology. We give examples of the intersection between terrestrial and cosmological probes in the neutrino sector, and briefly discuss the possibilities of what different laboratory experiments may see in conjunction with cosmological observatories. |
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Address |
[Gerbino, Martina; Lattanzi, Massimiliano; Brinckmann, Thejs] INFN, Sez Ferrara, I-44122 Ferrara, Italy, Email: gerbinom@fe.infn.it; |
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Elsevier |
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English |
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WOS:001112368600001 |
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no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5854 |
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Author |
Antusch, S.; Levy, M.; Centelles Chulia, S. |
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Title |
Gravity-assisted neutrino masses |
Type |
Journal Article |
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Year |
2026 |
Publication |
Physics Letters B |
Abbreviated Journal |
Phys. Lett. B |
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Volume |
876 |
Issue |
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Pages |
140410 - 6pp |
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Keywords |
Gravity; Neutrino mass generation; Gravitationally induced masses; Neutrino phenomenology; Beyond standard model; Effective field theory |
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Abstract |
Gravity is generally expected to violate global symmetries, including lepton number. However, neutrino masses from the Planck-suppressed Weinberg operator are typically too small to account for oscillation data. We propose a new model-building approach to low-scale neutrino mass generation, in which an intermediate spontaneous symmetry-breaking scale generates masses and mixings in the heavy neutral lepton (HNL) sector, while leaving an unbroken residual symmetry Gres that forbids light-neutrino masses. The observed light-neutrino masses then arise because gravity breaks Gres via Planck-suppressed operators, inducing the small lepton-number violation required in low-scale seesaw constructions. The HNLs form pseudo-Dirac pairs, with masses potentially within reach of future colliders and complementary tests in precision searches such as charged lepton flavour violation (cLFV). As an illustration, we present a representative realisation of this class of models and show that, for O(1) operator coefficients, it predicts a region in the (MR, Theta 2)-plane that can be testable via displaced-vertex searches at the High-Luminosity (HL-)LHC and the FCC-ee. |
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Address |
[Antusch, Stefan; Levy, Miguel] Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland, Email: stefan.antusch@unibas.ch; |
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Publisher |
Elsevier |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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0370-2693 |
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Notes |
WOS:001753000100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7208 |
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