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NuMI Off-Axis νe Appearance Experiment

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NOVA Document 31504-v3

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Impact of cross section uncertainties on NOvA oscillation analyses (NuFACT 2018)

Document #:
NOVA-doc-31504-v3
Document type:
talk
Submitted by:
Jeremy Wolcott
Updated by:
Jeremy Wolcott
Document Created:
08 Aug 2018, 10:28
Contents Revised:
17 Aug 2018, 09:37
Metadata Revised:
17 Aug 2018, 09:37
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  • Public document
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Abstract:
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 how uncertainties in this model, together with modifications to GENIE version 2.12.2 based on external information and NOvA Near Detector (ND) data, affect NOvA's oscillation parameter inferences. We also discuss how these uncertainties can be mitigated by judicious analysis design, including usage of the ND data.
Notes and Changes:
as presented 2018-08-17
Referenced by:
  • NOVA-doc-34531: NuFact 2018 proceedings: Effect of Xsec unc on osc analyses
Associated with Events:
held on 08 Aug 2018 in https://fnal.zoom.us/j/857946169
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