Non-standard interactions at NOvA [Poster]
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Abstract
neutrino oscillations through studies of νµ produced at the Fermilab accelerator facilities, and also comprise a suitable environment for investigation of additional phenomena taking part in the neutrino oscillation framework. We show in this thesis the results of the sensitivity studies to neutrino non standard interactions in the NOvA experiment through investigation of the disappearance of muon (anti)neutrinos during their evolution in the NOvA 810 km baseline. We investigate the effect of the NSI parameters, |εµτ| and δµτ, on the determination of the standard oscillation parameters sin2 (θ23) and Δ$$m^2_{32}$$, as well as the relation between each parameter, for both neutrino mass hierarchies. This study makes use of an exposure of 9.48 × 1020 POT for neutrino beam (FHC), and 12.33 × 1020 POT for antineutrino beam (RHC). No deviations from the standard oscillation scenario is found at the 90% CL limit. The joint neutrino and antineutrino fit yields a limit of |εµτ| ≤ 0.086 (0.085) for a fixed value of δµτ = 0, and |εµτ| ≤ 1.054 (1.053) for the case where both NSI parameters are fitted, for the normal (inverted) neutrino mass hierarchy, at the 90% CL. In the current sensitivity, all values of δµτ are found to be allowed. The 90% CL interval for the standard oscillation parameters are Δ$$m^2_{32}$$ ϵ [2.379, 2.580] and sin2 (θ23) ϵ [0.420, 0.602] for the normal hierarchy scenario, and Δ$$m^2_{32}$$ ϵ [-2.639, - 2.438] and sin2 (θ23) ϵ [0.418, 0.602] for the inverted hierarchy scenario.