Reconstruction Performance Studies with MicroBooNE Data in Support of Summer 2018 Analyses

In this note we present a number of reconstruction performance measurements conducted on MicroBooNE data. Results show good agreement between the data and the predictions from simulation, thus validating the version of the reconstruction used by MicroBooNE analyses, which are presented at 2018 conferences. The observed level of performance shows the high level of resolution obtainable with a large-scale LArTPC imaging detector. Tracking and vertexing resolutions at or below the millimeter scale are obtained for neutrino interaction event reconstruction. Energy reconstruction measurements are presented for tracks and EM showers using multiple Coulomb scattering and calorimetry respectively; in the case of EM showers these represent the first result obtained in a fully-automated reconstruction chain. Nevertheless, the present results are expected to improve with further refinements of the employed reconstruction algorithms. The techniques which are presented here have a broader validity than MicroBooNE and could be applied to other LArTPC detectors as they start taking data in the next months or years.