New Sources of Leptonic CP Violation at the DUNE Neutrino Experiment

Abstract

We check the capability of the DUNE neutrino experiment to detect new sources of leptonic CP violation beside the single phase expected in the Standard Model. We illustrate our strategy based on the measurement of CP asymmetries in the case that new physics will show up as nonstandard neutrino interactions and sterile neutrino states and show that the most promising one, once the experimental errors are taken into account in both scenarios, is the one related to the νμ→νe transition.

Improved sensitivities of ESS$ν$SB from a two-detector fit

“…Therefore, the effective oscillation probabilities of neutrinos and antineutrinos in short-baseline experiments are equal. There is, however, a difference between the oscillation probabilities of neutrinos and antineutrinos at longer distances, as those of long-baseline experiments [10,[56][57][58][59][60][61][62][63], where the effects of all the complex phases in the mixing matrix are observable. The elements of the fourth column of the mixing matrix must be small, because 3+1 active-sterile neutrino mixing must be a small perturbation of the standard three-neutrino mixing which fits very well the robust data of solar, atmospheric and long-baseline neutrino oscillation experiments [20][21][22].…”

Tau neutrinos in the next decade: from GeV to EeV

“…Using two configurations (3.5 years each in CP-optimized neutrino and antineutrino modes or 3 years each in CP-optimized neutrino and antineutrino modes and one year in tau-optimized neutrino mode, reference [69] studied the impact of including a selected ν τ sample on three-flavor mixing, a non-unitary PMNS matrix, light sterile neutrinos, and NC NSI, see e.g. [358].…”