Dr. Artur Ankowski "Influence of detector effects on kinematic and calorimetric neutrino energy reconstruction"

Wednesday 3 Feb 2016, 14:30 → 15:30 Europe/Rome

Aula F (Dipartimento Matematica e Fisica)

Abstract: To be able to achieve their physics goals, future neutrino-oscillation experiments will need to reconstruct the neutrino energy with very high accuracy. In this talk, based on recent papers [PRD 92, 073014 and 92, 091301(R) (2015)], I will analyze how the energy reconstruction may be affected by realistic detection capabilities, such as energy resolutions, efficiencies, and thresholds. Considering disappearance experiments, I will argue that for the calorimetric method of energy reconstruction, the detector performance has to be estimated with a ~10% accuracy, in order to avoid a significant bias in the extracted oscillation parameters. On the other hand, for the kinematic energy reconstruction, the oscillation results exhibit less sensitivity to an overestimation of the detector capabilities. For an appearance experiment of a setup similar to that of the Deep Underground Neutrino Experiment, the role of the missing energy---carried out by undetected particles---turns out to have a sizable effect on calorimetric energy reconstruction. The obtained results suggest that an accurate determination of the CP violation requires the missing energy to be quantified with an accuracy exceeding 20%.