Baseline and other effects for a sterile neutrino at DUNE

We analyze the sensitivity of the Deep Underground Neutrino Experiment (DUNE) to a sterile neutrino, combining information from both near and far detectors. We quantify often-neglected effects which may impact the event rate estimation in a 3+1 oscillation scenario. In particular, we find that takin...

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Bibliographic Details
Published in:arXiv.org 2023-05
Main Authors: Penedo, J T, Pulido, João
Format: Article
Language:English
Subjects:
Neutrinos
Sensitivity analysis
Online Access:Get full text
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Summary:We analyze the sensitivity of the Deep Underground Neutrino Experiment (DUNE) to a sterile neutrino, combining information from both near and far detectors. We quantify often-neglected effects which may impact the event rate estimation in a 3+1 oscillation scenario. In particular, we find that taking into account the information on the neutrino production point, in contrast to assuming a pointlike neutrino source, affects DUNE's sterile exclusion reach. Visible differences remain after the inclusion of energy bin-to-bin uncorrelated systematics. Instead, implementing exact oscillation formulae for near detector events, including a two slab density profile, does not result in any visible change in the sensitivity.
ISSN:2331-8422
DOI:10.48550/arxiv.2207.02331