First simulation study of trackless events in the INO-ICAL detector to probe the sensitivity to atmospheric neutrino oscillation parameters

The proposed India-based Neutrino Observatory will host a 50 kton magnetized iron calorimeter (ICAL) with resistive plate chambers as its active detector element. Its primary focus is to study charged-current interactions of atmospheric muon neutrinos via the reconstruction of muons in the detector....

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Bibliographic Details
Published in:Physical review. D 2020-08, Vol.102 (3), p.1, Article 032005
Main Authors: Chacko, Aleena, Indumathi, D., Libby, James F., Behera, P. K.
Format: Article
Language:English
Subjects:
Hadrons
Leptons
Muons
Neutrinos
Parameter sensitivity
Parameter uncertainty
Reconstruction
Resistive plate chambers
Sensitivity
Sensors
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Summary:The proposed India-based Neutrino Observatory will host a 50 kton magnetized iron calorimeter (ICAL) with resistive plate chambers as its active detector element. Its primary focus is to study charged-current interactions of atmospheric muon neutrinos via the reconstruction of muons in the detector. We present the first study of the energy and direction reconstruction of the final state lepton and hadrons produced in charged current interactions of atmospheric electron neutrinos at ICAL and the sensitivity of these events to neutrino oscillation parameters θ23 and Δm232. However, the signatures of these events are similar to those from neutral-current interactions and charged-current muon neutrino events in which the muon track is not reconstructed. On including the entire set of events that do not produce a muon track, we find that reasonably good sensitivity to θ23 is obtained, with a relative 1σ precision of 15% on the mixing parameter sin2θ23, which decreases to 21%, when systematic uncertainties are considered.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.102.032005