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Article Dans Une Revue Physical Review D Année : 2022

Nonunitarity of the lepton mixing matrix at the European Spallation Source

O.G. Miranda
  • Fonction : Auteur
M. Tórtola
  • Fonction : Auteur
J.W.F. Valle
  • Fonction : Auteur

Résumé

If neutrinos get mass through the exchange of lepton mediators, as in seesaw schemes, the neutrino appearance probabilities in oscillation experiments are modified due to effective nonunitarity of the lepton mixing matrix. This also leads to new CP phases and an ambiguity in underpinning the “conventional” phase of the three-neutrino paradigm. We study the CP sensitivities of various setups based at the European Spallation Source neutrino super-beam (ESSnuSB) experiment in the presence of nonunitarity. We also examine its potential in constraining the associated new physics parameters. Moreover, we show how the combination of DUNE and ESSnuSB can help further improve the sensitivities on the nonunitarity parameters.

Dates et versions

hal-03456857 , version 1 (30-11-2021)

Identifiants

Citer

Sabya Sachi Chatterjee, O.G. Miranda, M. Tórtola, J.W.F. Valle. Nonunitarity of the lepton mixing matrix at the European Spallation Source. Physical Review D, 2022, 106 (7), pp.075016. ⟨10.1103/PhysRevD.106.075016⟩. ⟨hal-03456857⟩
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