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Mathematical methods for neutrino cross-section extraction
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Mathematical methods for neutrino cross-section extraction
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Precise modeling of neutrino-nucleus scattering is becoming increasingly important as accelerator-based oscillation experiments seek definitive answers to open questions about neutrino properties. To guide the needed model refinements, a growing number of experimental collaborations are pursuing a wide-ranging program of neutrino interaction measurements at GeV energies. A key step in most such analyses is cross-section extraction, in which measured event counts are corrected for background contamination and imperfect detector performance to yield cross-section results that are directly comparable to theoretical predictions. In this paper, I review the major approaches to cross-section extraction in the literature using representative examples from the MINERvA, MicroBooNE, and T2K experiments. I then present two mathematical techniques, blockwise unfolding and the conditional covariance background constraint, which overcome some limitations of typical cross-section extraction procedures.
Forward citations
Cited by 7 Pith papers
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Probing Nuclear Effects with Transverse Kinematic Imbalance in Muon-neutrino Induced Charged-Current $\pi^0$ Production on Argon with the MicroBooNE Detector
First measurement of transverse kinematic imbalance in muon-neutrino CC pi0 production on argon finds that no model reproduces all observables simultaneously.
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Interaction-model dependence in calorimetric energy reconstruction methods due to non-linear material effects in modern neutrino detectors
Calorimetric neutrino energy reconstruction carries an interaction-model-dependent bias of ~7-18 MeV from Birks quenching and charge recombination, reducible to ~3.5 MeV with idealised hybrid tracking.
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Measurement of muon (anti-)neutrino charged-current quasielastic-like cross section using off-axis NuMI beam at ICARUS
First ICARUS off-axis NuMI measurement of muon-neutrino CCQE-like cross sections on argon yields four flux-averaged differential distributions that agree with all tested event generators.
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Measurement of charged-current muon neutrino-argon interactions without pions in the final state using the MicroBooNE detector
Reports flux-integrated single- and double-differential cross sections for νμ CC0π interactions on argon and compares them to neutrino event generators, finding good agreement in single-differential but only partial a...
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Measurement of muon (anti-)neutrino charged-current quasielastic-like cross section using off-axis NuMI beam at ICARUS
ICARUS measures flux-averaged differential CCQE-like cross sections in lepton angle, lepton-proton opening angle, and transverse kinematic imbalance variables, finding agreement with event generator predictions within...
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Measurement of muon (anti-)neutrino charged-current quasielastic-like cross section using off-axis NuMI beam at ICARUS
ICARUS measures flux-averaged differential CCQE-like cross sections in lepton angle, opening angle, and transverse imbalance variables, finding general agreement with event generators but insufficient power to discrim...
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CP-violation or Nuclear Excitation: Reviewing the Role of Neutrino Interaction Model Uncertainties on Accelerator-Based Neutrino Oscillation Measurements
Neutrino interaction model uncertainties from nuclear physics details remain a dominant systematic in oscillation analyses and will require improved modeling plus near-detector constraints to reach the precision goals...
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