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We investigate the effects of charged-current (CC) nonstandard neutrinointeractions (NSIs) at the source and at the detector in the simulated data forthe planned Deep Underground Neutrino Experiment (DUNE), while neglecting theneutral-current NSIs at the propagation due to the fact that several solutionshave been proposed to resolve the degeneracies posed by neutral-current NSIswhile no solution exists for the degeneracies due to the CC NSIs. We study theeffects of CC NSIs on the simultaneous measurements of $\theta_{23}$ and$\delta_{CP}$ in DUNE. The analysis reveals that 3$\sigma $ C.L. measurement ofthe correct octant of $\theta_{23}$ in the standard mixing scenario is spoiledif the CC NSIs are taken into account. Likewise, the CC NSIs can deterioratethe uncertainty of the $\delta_{CP}$ measurement by a factor of two relative tothat in the standard oscillation scenario. We also show that the source and thedetector CC NSIs can induce a significant amount of fake CP-violation and theCP-conserving case can be excluded by more than 80\% C.L. in the presence offake CP-violation. We further find the potential of DUNE to constrain therelevant CC NSI parameters from the single parameter fits for both neutrino andantineutrino appearance and disappearance channels at both the near and fardetectors. The results show that there could be improvement in the currentbounds by at least one order of magnitude at the near and far detector of DUNEexcept a few parameters which remain weaker at the far detector.

Sensitivities to charged-current nonstandard neutrino interactions at DUNE