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Challenges posed by non-standard neutrino interactions in the determination of $\delta_{CP}$ at DUNE

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arxiv 1711.04840 v1 pith:3NPFQ4UC submitted 2017-11-13 hep-ph

classification hep-ph
keywords duneneutrinoviolationdeltaidentifyimpactinteractionsnon-standard
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

One of the primary objectives of Deep Underground Neutrino Experiment (DUNE) is to discover the leptonic CP violation and to identify it's source. In this context, we study the impact of non-standard neutrino interactions (NSIs) on observing the CP violation signal at DUNE. We explore the impact of various parameter degeneracies introduced by non-zero NSI and identify which of these can influence the CP violation sensitivity and CP precision of DUNE, by considering NSI both in data and in theory. In particular, we study how the CP sensitivity of DUNE is affected because of the intrinsic hierarchy degeneracy which occurs when the diagonal NSI parameter $\epsilon_{ee}=-1$ and $\delta_{CP}= \pm 90^{\circ}$.

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Cited by 1 Pith paper

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  1. Neutrino mass ordering obscured by non-standard interactions

    hep-ph 2019-08 conditional novelty 5.0 of 10

    Allowing electron-tau non-standard neutrino interactions in the T2K and NOvA data removes the preference for normal mass ordering and even creates a mild preference for inverted ordering.

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