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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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First neutrino oscillation measurements in NOvA
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Neutrino oscillations with the MINOS, MINOS+, T2K, and NOvA experiments
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Nuclear structure of 30 S and its implications for nucleosynthesis in classical novae
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Seasonal variation of multiple-muon cosmic ray air showers observed in the NOvA detector on the surface
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Improved measurement of neutrino oscillation parameters by the NOvA experiment
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Very light sterile neutrinos at NOvA and T2K
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Measurement of the double-differential muon-neutrino charged-current inclusive cross section in the NOvA near detector
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Improved energy reconstruction in NOvA with regression convolutional neural networks
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First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
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Search for Active-Sterile Antineutrino Mixing Using Neutral-Current Interactions with the NOvA Experiment
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Study of muon neutrino and muon antineutrino disappearance with the NOvA neutrino oscillation experiment
The primary goal of this working group is to study the disappearance rate of ν μ charged current events in order to measure the mixing angle θ 23 and the magnitude of the neutrino mass square splitting Δm 2 32 .
Observation of Muon Neutrino Charged Current Events in an Off-Axis Horn-Focused Neutrino Beam Using the NOvA Prototype Detector
The NOνA is a long base-line neutrino oscillation experiment. It will study the oscillations between muon and electron neutrinos through the Earth. NOνA consists of two detectors separated by 810 km. Each detector will measure the electron neutrino content of the neutrino (NuMI) beam. Differences between the measurements will reveal details about the oscillation channel. The NOνA collaboration built a prototype detector on the surface at Fermilab in order to develop calibration, simulation, and reconstruction tools, using real data. This 220 ton detector is 110 mrad off the NuMI beam axis. This off-axis location allows the observation of neutrino interactions with energies around 2 GeV, where neutrinos come predominantly from charged kaon decays. During the period between October 2011 and April 2012, the prototype detector collected neutrino data from 1.67 × 10 20 protons on target delivered by the NuMI beam. This analysis selected a number of candidate charged current muon neutrino events from the prototype data, which is 30% lower than predicted by the NOνA Monte Carlo simulation. The analysis suggests that the discrepancy comes from an over estimation of the neutrino flux in the Monte Carlo simulation, and in particular, from neutrinos generated in charged kaon decays. The ratio of measured divided by the simulated flux of muon neutrinos coming from charged kaon decays is: 0.70 +0.108 -0.094 . The NOνA collaboration may use the findings of this analysis to introduce a more accurate prediction of the neutrino flux produced by the NuMI beam in future Monte Carlo simulations.
Muon Neutrino Contained Disappearance in NOvA
The NO$\nu$ A experiment studies neutrino oscillations in the NuMI neutrino beam from Fermilab. NO$\nu$ A consists of two liquid scintillator tracking calorimeters placed 14 milliradians off-axis from the beam and 810 km apart. The NO$\nu$ A experiment started taking data in 2014. This thesis establishes the neutrino energy estimation procedures used to determine the oscillation parameters sin 2 θ 23 and Δm 2 32 .
Neutrino Beam Simulations and Data Checks for the NOvA Experiment
This thesis presents a study of the NuMI beam line intended to clarify how the particle trajectories through the focusing system and consequently the neutrino event yield are affected by the variation of the Horn Currents.