Speaker
Description
In this work, we studied the modifications of the neutrino oscillation proba-
bilities due to possible non-standard interactions (NSI) with matter (taking into
account a constant matter density profile), focused on the channels ν μ → ν μ and
ν μ → ν e . First, the neutrino oscillation probability in matter without NSI was
studied and then we proceeded with NSI. The most relevant NSI parameters that
affect the oscillation phenomenon were also studied. To carry out this study, a
code was written using the MathematicaTM software, in which the Hamiltonian
was defined in terms of non-standard interaction, the evolution operator and the
initial and final states of the neutrinos, then the parameters ∆m 231 and θ 23 were
changed at 1σ and 3σ of Confidence Level (C.L) for the particular configuration
of the NOν A and DUNE experiments. As a result, the ν e appearance prob-
ability is affected by the parameters ? ee , ? eμ , ? eτ , ? τ τ and ? μτ , and their range
of allowed values are found, taking into account the current experimental oscil-
lation measurements and uncertainties. Unlike the channel of ν e appearance,
in muon neutrino disappearance channel there is only one NSI parameter that
affects this probability and this is ? μτ that takes the range −0.07 ≤ ? μτ ≤ 0.07
a 1σ and −0.176 ≤ ? μτ ≤ 0.132 a 3σ for thet NOνA experimen and for the
DUNE experiment a range was found within the values −0.032 ≤ ? μτ ≤ 0.032
at 1σ and −0.083 ≤ ? μτ ≤ 0.090 3σ of C.L.
