Neutrino tomography of the Earth with ORCA detector
Abstract Using PREM as a reference model for the Earth density distribution we investigate the sensitivity of ORCA detector to deviations of the Earth (i) outer core (OC) density, (ii) inner core (IC) density, (iii) total core density, and (iv) mantle density, from their respective PREM densities. T...
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Online Access: | https://doi.org/10.1140/epjc/s10052-022-10399-6 https://doaj.org/article/7b22b38c91844c29a09f6c8f1f801a3d |
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ftdoajarticles:oai:doaj.org/article:7b22b38c91844c29a09f6c8f1f801a3d 2023-05-15T17:53:22+02:00 Neutrino tomography of the Earth with ORCA detector F. Capozzi S. T. Petcov 2022-05-01T00:00:00Z https://doi.org/10.1140/epjc/s10052-022-10399-6 https://doaj.org/article/7b22b38c91844c29a09f6c8f1f801a3d EN eng SpringerOpen https://doi.org/10.1140/epjc/s10052-022-10399-6 https://doaj.org/toc/1434-6052 doi:10.1140/epjc/s10052-022-10399-6 1434-6052 https://doaj.org/article/7b22b38c91844c29a09f6c8f1f801a3d European Physical Journal C: Particles and Fields, Vol 82, Iss 5, Pp 1-23 (2022) Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 article 2022 ftdoajarticles https://doi.org/10.1140/epjc/s10052-022-10399-6 2022-12-30T23:11:08Z Abstract Using PREM as a reference model for the Earth density distribution we investigate the sensitivity of ORCA detector to deviations of the Earth (i) outer core (OC) density, (ii) inner core (IC) density, (iii) total core density, and (iv) mantle density, from their respective PREM densities. The analysis is performed by studying the effects of the Earth matter on the oscillations of atmospheric $$\nu _{\mu }$$ ν μ , $$\nu _e$$ ν e , $${\bar{\nu }}_\mu $$ ν ¯ μ and $${\bar{\nu }}_e$$ ν ¯ e . We present results which illustrate the dependence of the ORCA sensitivity to the OC, IC, core and mantle densities on the type of systematic uncertainties used in the analysis, on the value of the atmospheric neutrino mixing angle $$\theta _{23}$$ θ 23 , on whether the Earth mass constraint is implemented or not, and on the way it is implemented, and on the type – with normal ordering (NO) or inverted ordering (IO) – of the light neutrino mass spectrum. We show, in particular, that in the “most favorable” NO case of implemented Earth mass constraint, “minimal” systematic errors and $$\sin ^2\theta _{23}=0.58$$ sin 2 θ 23 = 0.58 , ORCA can determine, e.g., the OC (mantle) density at $$3\sigma $$ 3 σ C.L. after 10 years of operation with an uncertainty of (− 18%)/+ 15% (of (− 6%)/+ 8%). In the “most disfavorable” NO case of “conservative” systematic errors and $$\sin ^2\theta _{23}=0.42$$ sin 2 θ 23 = 0.42 , the uncertainty on OC (mantle) density reads (− 43%)/+ 39% ((− 17%/+ 20%), while for for $$\sin ^2\theta _{23} = 0.50$$ sin 2 θ 23 = 0.50 and 0.58 it is noticeably smaller: (− 37)%/+ 30% and (− 30%)/+ 24% ((− 13%)/+ 16% and (− 11%/+ 14%)). We find also that the sensitivity of ORCA to the OC, core and mantle densities is significantly worse for IO neutrino mass spectrum. Article in Journal/Newspaper Orca Directory of Open Access Journals: DOAJ Articles The European Physical Journal C 82 5 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 |
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Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 F. Capozzi S. T. Petcov Neutrino tomography of the Earth with ORCA detector |
topic_facet |
Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 |
description |
Abstract Using PREM as a reference model for the Earth density distribution we investigate the sensitivity of ORCA detector to deviations of the Earth (i) outer core (OC) density, (ii) inner core (IC) density, (iii) total core density, and (iv) mantle density, from their respective PREM densities. The analysis is performed by studying the effects of the Earth matter on the oscillations of atmospheric $$\nu _{\mu }$$ ν μ , $$\nu _e$$ ν e , $${\bar{\nu }}_\mu $$ ν ¯ μ and $${\bar{\nu }}_e$$ ν ¯ e . We present results which illustrate the dependence of the ORCA sensitivity to the OC, IC, core and mantle densities on the type of systematic uncertainties used in the analysis, on the value of the atmospheric neutrino mixing angle $$\theta _{23}$$ θ 23 , on whether the Earth mass constraint is implemented or not, and on the way it is implemented, and on the type – with normal ordering (NO) or inverted ordering (IO) – of the light neutrino mass spectrum. We show, in particular, that in the “most favorable” NO case of implemented Earth mass constraint, “minimal” systematic errors and $$\sin ^2\theta _{23}=0.58$$ sin 2 θ 23 = 0.58 , ORCA can determine, e.g., the OC (mantle) density at $$3\sigma $$ 3 σ C.L. after 10 years of operation with an uncertainty of (− 18%)/+ 15% (of (− 6%)/+ 8%). In the “most disfavorable” NO case of “conservative” systematic errors and $$\sin ^2\theta _{23}=0.42$$ sin 2 θ 23 = 0.42 , the uncertainty on OC (mantle) density reads (− 43%)/+ 39% ((− 17%/+ 20%), while for for $$\sin ^2\theta _{23} = 0.50$$ sin 2 θ 23 = 0.50 and 0.58 it is noticeably smaller: (− 37)%/+ 30% and (− 30%)/+ 24% ((− 13%)/+ 16% and (− 11%/+ 14%)). We find also that the sensitivity of ORCA to the OC, core and mantle densities is significantly worse for IO neutrino mass spectrum. |
format |
Article in Journal/Newspaper |
author |
F. Capozzi S. T. Petcov |
author_facet |
F. Capozzi S. T. Petcov |
author_sort |
F. Capozzi |
title |
Neutrino tomography of the Earth with ORCA detector |
title_short |
Neutrino tomography of the Earth with ORCA detector |
title_full |
Neutrino tomography of the Earth with ORCA detector |
title_fullStr |
Neutrino tomography of the Earth with ORCA detector |
title_full_unstemmed |
Neutrino tomography of the Earth with ORCA detector |
title_sort |
neutrino tomography of the earth with orca detector |
publisher |
SpringerOpen |
publishDate |
2022 |
url |
https://doi.org/10.1140/epjc/s10052-022-10399-6 https://doaj.org/article/7b22b38c91844c29a09f6c8f1f801a3d |
genre |
Orca |
genre_facet |
Orca |
op_source |
European Physical Journal C: Particles and Fields, Vol 82, Iss 5, Pp 1-23 (2022) |
op_relation |
https://doi.org/10.1140/epjc/s10052-022-10399-6 https://doaj.org/toc/1434-6052 doi:10.1140/epjc/s10052-022-10399-6 1434-6052 https://doaj.org/article/7b22b38c91844c29a09f6c8f1f801a3d |
op_doi |
https://doi.org/10.1140/epjc/s10052-022-10399-6 |
container_title |
The European Physical Journal C |
container_volume |
82 |
container_issue |
5 |
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1766161077938159616 |