Unitarity of the Leptonic Mixing Matrix

By S. Antusch, C. Biggio, Enrique Fernandez-Martinez, M. B. Gavela, J. Lopez-Pavon. 2006

409 citations recorded by the source corpus.

We determine the elements of the leptonic mixing matrix, without assuming unitarity, combining data from neutrino oscillation experiments and weak decays. To that end, we first develop a formalism for studying neutrino oscillations in vacuum and matter when the leptonic mixing matrix is not unitary. To be conservative, only three light neutrino species are considered, whose propagation is generically affected by non-unitary effects. Precision improvements within future facilities are discussed as well.

Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/4516f0e1f39a6ddd1442ef5113815c989a2b6994

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. M. Drewes
2. Z. Xing
3. M. Shaposhnikov
4. R. Essig
5. A. Ringwald
6. K. Zurek
7. Alexey Boyarsky
8. Oleg Ruchayskiy

In Statistical and Nonlinear Physics

1. M. Drewes
2. M. Shaposhnikov
3. Fedor Bezrukov
4. Matthew Mewes
5. Z. Xing
6. P. S. Bhupal Dev
7. U. Tokyo
8. R. Volkas

Citations in the corpus

• From the Trees to the Forest: A Review of Radiative Neutrino Mass Models (2017, background): “charged scalar boson in the type-II seesaw model, or due to the non-unitarity of the leptonic mixing matrix in type-I and type-III seesaw models when the extra neutral fermions are heavy [433, 434].”
• A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, background): “However, if mD ∼ MN , in the ISS case, it would lead to large corrections to leptonic non-unitarity on which there are strong limits [506].”
• Flavor structures of charged fermions and massive neutrinos (2019, background): “But fortunately current electroweak precision measurements and neutrino oscillation data have constrained U to be unitary at the O(10−2) level [108, 109, 110].”
• Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, background): “The phenomenological implications of a non-unitary leptonic mixing matrix have been extensively studied in flavor and electroweak precision observables as well as in the neutrino oscillation phenomenon [363, 141, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 360, 53”
• JUNO physics and detector (2021, background): “• Light sterile neutrinos [151], non-unitarity of the neutrino mixing matrix [152] and non-standard neutrino interactions [153] are representative new-physics scenarios beyond the standard three neutrino oscillation framework.”
• The Phenomenology of Right Handed Neutrinos (2013, background): “to muon decays μ → eγ and unitarity violation of the PMNS matrix [110, 111].”
• Sterile neutrino Dark Matter (2018, background): “arks and lepton to the SM to keep the theory free of anomalies. This possibility is (at least in simple realisations) strongly disfavoured by data [47]. 8This assumption is in principle not necessary [48], but only leads to small errors if is small. It is mainly justied by the fact that it gives a g”