Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA
Multi-megaton scale under ice and underwater detectors of atmospheric neutrinos with few GeV's energy threshold (PINGU, ORCA) open up new possibilities in the determination of neutrino properties, and in particular the neutrino mass hierarchy. With a dense array of optical modules it will be po...
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ftdatacite:10.48550/arxiv.1303.0758 2023-05-15T17:53:37+02:00 Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA Ribordy, Mathieu Smirnov, Alexei Yu 2013 https://dx.doi.org/10.48550/arxiv.1303.0758 https://arxiv.org/abs/1303.0758 unknown arXiv https://dx.doi.org/10.1103/physrevd.87.113007 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ High Energy Physics - Phenomenology hep-ph High Energy Physics - Experiment hep-ex FOS Physical sciences article-journal Article ScholarlyArticle Text 2013 ftdatacite https://doi.org/10.48550/arxiv.1303.0758 https://doi.org/10.1103/physrevd.87.113007 2022-04-01T13:26:44Z Multi-megaton scale under ice and underwater detectors of atmospheric neutrinos with few GeV's energy threshold (PINGU, ORCA) open up new possibilities in the determination of neutrino properties, and in particular the neutrino mass hierarchy. With a dense array of optical modules it will be possible to determine the inelasticity, $y$, of the charged current $ν_μ$ events in addition to the neutrino energy $E_ν$ and the muon zenith angle $θ_μ$. The discovery potential of the detectors will substantially increase with the measurement of $y$. It will enable (i) a partial separation of the neutrino and antineutrino signals; (ii) a better reconstruction of the neutrino direction; (iii) the reduction of the neutrino parameters degeneracy; (iv) a better control of systematic uncertainties; (v) a better identification of the $ν_μ$ events. It will improve the sensitivity to the CP-violation phase. The three dimensional, $(E_ν, θ_μ, y)$, $ν_μ-$oscillograms with the kinematical as well as the experimental smearing are computed. We present the asymmetry distributions in the $E_ν- θ_μ$ plane for different intervals of $y$ and study their properties. We show that the inelasticity information reduces the effect of degeneracy of parameters by 30%. With the inelasticity, the total significance of establishing mass hierarchy may increase by 20% - 50%, thus effectively increasing the volume of the detector by factor 1.5 - 2. : 19 pages, 10 figures Text Orca DataCite Metadata Store (German National Library of Science and Technology) Pingu ENVELOPE(-52.017,-52.017,67.067,67.067) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
High Energy Physics - Phenomenology hep-ph High Energy Physics - Experiment hep-ex FOS Physical sciences |
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High Energy Physics - Phenomenology hep-ph High Energy Physics - Experiment hep-ex FOS Physical sciences Ribordy, Mathieu Smirnov, Alexei Yu Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA |
topic_facet |
High Energy Physics - Phenomenology hep-ph High Energy Physics - Experiment hep-ex FOS Physical sciences |
description |
Multi-megaton scale under ice and underwater detectors of atmospheric neutrinos with few GeV's energy threshold (PINGU, ORCA) open up new possibilities in the determination of neutrino properties, and in particular the neutrino mass hierarchy. With a dense array of optical modules it will be possible to determine the inelasticity, $y$, of the charged current $ν_μ$ events in addition to the neutrino energy $E_ν$ and the muon zenith angle $θ_μ$. The discovery potential of the detectors will substantially increase with the measurement of $y$. It will enable (i) a partial separation of the neutrino and antineutrino signals; (ii) a better reconstruction of the neutrino direction; (iii) the reduction of the neutrino parameters degeneracy; (iv) a better control of systematic uncertainties; (v) a better identification of the $ν_μ$ events. It will improve the sensitivity to the CP-violation phase. The three dimensional, $(E_ν, θ_μ, y)$, $ν_μ-$oscillograms with the kinematical as well as the experimental smearing are computed. We present the asymmetry distributions in the $E_ν- θ_μ$ plane for different intervals of $y$ and study their properties. We show that the inelasticity information reduces the effect of degeneracy of parameters by 30%. With the inelasticity, the total significance of establishing mass hierarchy may increase by 20% - 50%, thus effectively increasing the volume of the detector by factor 1.5 - 2. : 19 pages, 10 figures |
format |
Text |
author |
Ribordy, Mathieu Smirnov, Alexei Yu |
author_facet |
Ribordy, Mathieu Smirnov, Alexei Yu |
author_sort |
Ribordy, Mathieu |
title |
Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA |
title_short |
Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA |
title_full |
Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA |
title_fullStr |
Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA |
title_full_unstemmed |
Improving the neutrino mass hierarchy identification with inelasticity measurement in PINGU and ORCA |
title_sort |
improving the neutrino mass hierarchy identification with inelasticity measurement in pingu and orca |
publisher |
arXiv |
publishDate |
2013 |
url |
https://dx.doi.org/10.48550/arxiv.1303.0758 https://arxiv.org/abs/1303.0758 |
long_lat |
ENVELOPE(-52.017,-52.017,67.067,67.067) |
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Pingu |
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Pingu |
genre |
Orca |
genre_facet |
Orca |
op_relation |
https://dx.doi.org/10.1103/physrevd.87.113007 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1303.0758 https://doi.org/10.1103/physrevd.87.113007 |
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1766161320475885568 |