Bound on
Physical Review Letters, 2021 We report on the light sterile neutrino search from the first four-week science run of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are analyzed by a high-resolution MAC-E filter down to 40 eV ...
M. Aker +99 more
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Discrete flavour symmetries, neutrino mixing and leptonic CP violation [PDF]
European Physical Journal C: Particles and Fields, 2018 The current status of our knowledge of the 3-neutrino mixing parameters and of the CP violation in the lepton sector is summarised. The non-Abelian discrete symmetry approach to understanding the observed pattern of neutrino mixing and the related ...
S. T. Petcov
doaj +2 more sources
Testing sterile neutrino mixing with present and future solar neutrino data [PDF]
European Physical Journal C: Particles and Fields, 2022 We investigate the sensitivity of solar neutrino data to mixing of sterile neutrinos with masses $$\gtrsim $$ ≳ eV. For current data, we perform a Feldman–Cousins analysis to derive a robust limit on the sterile neutrino mixing. The solar neutrino limit
Kim Goldhagen +3 more
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Trimaximal neutrino mixing from modular A4 invariance with residual symmetries [PDF]
Physics Letters B, 2019 We construct phenomenologically viable models of lepton masses and mixing based on modular A4 invariance broken to residual symmetries Z3T or Z3ST and Z2S respectively in the charged lepton and neutrino sectors. In these models the neutrino mixing matrix
P.P. Novichkov, S.T. Petcov, M. Tanimoto
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Neutrino mixing and leptonic CP violation from S 4 flavour and generalised CP symmetries [PDF]
Journal of High Energy Physics, 2017 We consider a class of models of neutrino mixing with S 4 lepton flavour symmetry combined with a generalised CP symmetry, which are broken to residual Z 2 and Z 2 × H CP ν symmetries in the charged lepton and neutrino sectors, respectively, H CP ν being
J.T. Penedo, S.T. Petcov, A.V. Titov
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Trimaximal neutrino mixing from scotogenic A4 family symmetry
Physics Letters B, 2021 We propose a flavor theory of leptons implementing an A4 family symmetry. Our scheme provides a simple way to derive trimaximal neutrino mixing from first principles, leading to simple and testable predictions for neutrino mixing and CP violation.
Gui-Jun Ding +2 more
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Predictions for the Dirac CP violation phase in the neutrino mixing matrix [PDF]
, 2015 Using the fact that the neutrino mixing matrix , where Ue and Uν result from the diagonalization of the charged lepton and neutrino mass matrices, we analyze the predictions based on the sum rules which the Dirac phase δ present in U satisfies when Uν ...
S. T. Petcov, I. Girardi, A. V. Titov
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Measurement of atmospheric neutrino mixing with improved IceCube DeepCore calibration and data processing [PDF]
Physical Review D, 2023 We describe a new data sample of IceCube DeepCore and report on the latest measurement of atmospheric neutrino oscillations obtained with data recorded between 2011-2019.
I. R. Abbasi +405 more
semanticscholar +1 more source
Bounds on lepton non-unitarity and heavy neutrino mixing [PDF]
Journal of High Energy Physics, 2023 We present an updated and improved global fit analysis of current flavour and electroweak precision observables to derive bounds on unitarity deviations of the leptonic mixing matrix and on the mixing of heavy neutrinos with the active flavours. This new
M. Blennow +5 more
semanticscholar +1 more source
Nonunitary neutrino mixing in short and long-baseline experiments [PDF]
Physical Review D, 2021 Non-unitary neutrino mixing in the light neutrino sector is a direct consequence of type-I seesaw neutrino mass models. In these models, light neutrino mixing is described by a sub-matrix of the full lepton mixing matrix and, then, it is not unitary in ...
D. V. Forero +3 more
semanticscholar +1 more source