NOνA (E929)
NuMI Off-Axis νe Appearance Experiment

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Impact of cross section modeling on NOvA oscillation analyses (NuInt 2018)

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Submitted by:
Jeremy Wolcott
Updated by:
Jeremy Wolcott
Document Created:
09 Oct 2018, 13:02
Contents Revised:
18 Oct 2018, 02:05
Metadata Revised:
18 Oct 2018, 02:05
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The NOvA experiment is an off-axis long-baseline neutrino oscillation experiment seeking to measure $\nu_{\mu}$ disappearance and $\nu_{e}$ appearance in a $\nu_{\mu}$ beam originating at Fermilab. Oscillations are observed in the far detector relative to measurements made in the near detector, with a full simulation of the beam line and detectors being used to perform extrapolation between them. The neutrino simulation uses the GENIE event generator, which contains implementations of numerous theoretical neutrino interaction models applied to a variety of nuclear targets. However, recent data, recent reanalysis of extant data, and continued development of theoretical models have brought to light deficiencies in the default GENIE cross section model, which informs the predicted spectra used to infer oscillation parameters. We explore modifications to GENIE version 2.12.2 based on external information and NOvA Near Detector (ND) data, which improve the predictions of this model. We also consider how the residual uncertainties in the model affect NOvA's oscillation parameter inferences, and how these uncertainties can be mitigated by judicious analysis design, including usage of the ND data.
Notes and Changes:
As presented Oct. 17, 2018
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