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  • 1703.06187v1

    Rights statement: This is an author-created, un-copyedited version of an article published in Journal of Instrumentation. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.1088/1748-0221/12/10/P10010

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Determination of muon momentum in the MicroBooNE LArTPC using an improved model of multiple Coulomb scattering

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  • MicroBooNE Collaboration
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Article numberP10010
<mark>Journal publication date</mark>18/10/2017
<mark>Journal</mark>Journal of Instrumentation
Volume12
Number of pages24
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We discuss a technique for measuring a charged particle's momentum by means of multiple Coulomb scattering (MCS) in the MicroBooNE liquid argon time projection chamber (LArTPC). This method does not require the full particle ionization track to be contained inside of the detector volume as other track momentum reconstruction methods do (range-based momentum reconstruction and calorimetric momentum reconstruction). We motivate use of this technique, describe a tuning of the underlying phenomenological formula, quantify its performance on fully contained beam-neutrino-induced muon tracks both in simulation and in data, and quantify its performance on exiting muon tracks in simulation. We find agreement between data and simulation for contained tracks, with a small bias in the momentum reconstruction and with resolutions that vary as a function of track length, improving from about 10% for the shortest (one meter long) tracks to 5% for longer (several meter) tracks. For simulated exiting muons with at least one meter of track contained, we find a similarly small bias, and a resolution which is less than 15% for muons with momentum below 2 GeV/c.

Bibliographic note

This is an author-created, un-copyedited version of an article published in Journal of Instrumentation. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.1088/1748-0221/12/10/P10010