Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration
The Neutrino Mass Ordering (NMO) remains one of the outstanding questions in the field of neutrino physics. One strategy to measure the NMO is to observe matter effects in the oscillation pattern of atmospheric neutrinos above ∼1GeV, as proposed for several next-generation neutrino experiments. More...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal article |
| Language: | English |
| Published: |
Springer Nature
2020
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| _version_ | 1811140576664354816 |
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| author | Aartsen, MG Ackermann, M Adams, J Sarkar, S |
| author2 | IceCube Collaboration |
| author_facet | IceCube Collaboration Aartsen, MG Ackermann, M Adams, J Sarkar, S |
| author_sort | Aartsen, MG |
| collection | OXFORD |
| description | The Neutrino Mass Ordering (NMO) remains one of the outstanding questions in the field of neutrino physics. One strategy to measure the NMO is to observe matter effects in the oscillation pattern of atmospheric neutrinos above ∼1GeV, as proposed for several next-generation neutrino experiments. Moreover, the existing IceCube DeepCore detector can already explore this type of measurement. We present the development and application of two independent analyses to search for the signature of the NMO with three years of DeepCore data. These analyses include a full treatment of systematic uncertainties and a statistically-rigorous method to determine the significance for the NMO from a fit to the data. Both analyses show that the dataset is fully compatible with both mass orderings. For the more sensitive analysis, we observe a preference for normal ordering with a p-value of pIO=15.3% and CLs=53.3% for the inverted ordering hypothesis, while the experimental results from both analyses are consistent within their uncertainties. Since the result is independent of the value of δCP and obtained from energies Eν≳5GeV, it is complementary to recent results from long-baseline experiments. These analyses set the groundwork for the future of this measurement with more capable detectors, such as the IceCube Upgrade and the proposed PINGU detector. |
| first_indexed | 2024-03-07T04:50:09Z |
| format | Journal article |
| id | oxford-uuid:d4ac4a1d-5359-453d-ad15-7d23efa53dd9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:24:11Z |
| publishDate | 2020 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:d4ac4a1d-5359-453d-ad15-7d23efa53dd92024-08-20T12:20:14ZDevelopment of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube CollaborationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d4ac4a1d-5359-453d-ad15-7d23efa53dd9EnglishSymplectic ElementsSpringer Nature2020Aartsen, MGAckermann, MAdams, JSarkar, SIceCube CollaborationThe Neutrino Mass Ordering (NMO) remains one of the outstanding questions in the field of neutrino physics. One strategy to measure the NMO is to observe matter effects in the oscillation pattern of atmospheric neutrinos above ∼1GeV, as proposed for several next-generation neutrino experiments. Moreover, the existing IceCube DeepCore detector can already explore this type of measurement. We present the development and application of two independent analyses to search for the signature of the NMO with three years of DeepCore data. These analyses include a full treatment of systematic uncertainties and a statistically-rigorous method to determine the significance for the NMO from a fit to the data. Both analyses show that the dataset is fully compatible with both mass orderings. For the more sensitive analysis, we observe a preference for normal ordering with a p-value of pIO=15.3% and CLs=53.3% for the inverted ordering hypothesis, while the experimental results from both analyses are consistent within their uncertainties. Since the result is independent of the value of δCP and obtained from energies Eν≳5GeV, it is complementary to recent results from long-baseline experiments. These analyses set the groundwork for the future of this measurement with more capable detectors, such as the IceCube Upgrade and the proposed PINGU detector. |
| spellingShingle | Aartsen, MG Ackermann, M Adams, J Sarkar, S Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration |
| title | Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration |
| title_full | Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration |
| title_fullStr | Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration |
| title_full_unstemmed | Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration |
| title_short | Development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of IceCube DeepCore data: IceCube Collaboration |
| title_sort | development of an analysis to probe the neutrino mass ordering with atmospheric neutrinos using three years of icecube deepcore data icecube collaboration |
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