PT Journal
AU Chatterjee, SS
   Miranda, OG
   Tortola, M
   Valle, JWF
TI Nonunitarity of the lepton mixing matrix at the European Spallation Source
SO Physical Review D
JI Phys. Rev. D
PY 2022
BP 075016
EP 16pp
VL 106
IS 7
DI 10.1103/PhysRevD.106.075016
LA English
AB 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.
ER