Some uncertainties of neutrino oscillation effect in the NO$\nu$A experiment

Uncertainties related to the effect of neutrino coherent forward scattering in Earth’s matter (MSW mechanism) and with the cross sections of quasi-elastic neutrino scattering on nuclear targets of the NO$\nu$A detectors are studied. The NO$\nu$A sensitivity to the neutrino mass hierarchy and the CP violating phase is discussed.