Simulation of heterogeneity sections obtained by neutrino radiography

Takeuchi, Nozomu

doi:10.5047/eps.2009.05.004

Cited by 11 publications

(10 citation statements)

References 42 publications

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“…The idea of using the absorption of very high energy neutrinos to explore the Earth's interior dates back to 1974 [45] and is analogous to X-ray tomography, but instead exploits the attenuation of the neutrino flux for energies E ν 10 TeV [46]. There are numerous studies which have considered neutrinos of different origins, such as man-made neutrinos [45,[47][48][49][50][51][52][53][54][55][56], extraterrestrial neutrinos 1 [51,[57][58][59][60] and atmospheric neutrinos [61][62][63][64]. On the other hand, neutrino oscillation tomography relies on the matter effects in neutrino oscillations and it has been considered by studying man-made beams [65][66][67][68][69][70][71][72][73][74][75], solar [76,77] and supernova neutrinos [77,78].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Earth matter effect with atmospheric neutrinos in ice

Agarwalla¹,

Li²,

Mena³

et al. 2012

Preprint

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We study the possibility to perform neutrino oscillation tomography and to determine the neutrino mass hierarchy in kilometer-scale ice Čerenkov detectors by means of the θ 13 -driven matter effects which occur during the propagation of atmospheric neutrinos deep through the Earth. We consider the ongoing IceCube/DeepCore neutrino observatory and future planned extensions, such as the PINGU detector, which has a lower energy threshold. Our simulations include the impact of marginalization over the neutrino oscillation parameters and a fully correlated systematic uncertainty on the total number of events. For the current best-fit value of the mixing angle θ 13 , the DeepCore detector, due to its relatively high-energy threshold, could only be sensitive to fluctuations on the normalization of the Earth's density of ∆ρ ±10% at ∼ 1.6σ CL after 10 years in the case of a true normal hierarchy. For the two PINGU configurations we consider, overall density fluctuations of ∆ρ ±3% (±2%) could be measured at the 2σ CL after 10 years, also in the case of a normal mass hierarchy. We also compare the prospects to determine the neutrino mass hierarchy in these three configurations and find that this could be achieved at the 5σ CL, for both hierarchies, after 5 years in DeepCore and about 1 year in PINGU. This clearly shows the importance of lowering the energy threshold below 10 GeV so that detectors are fully sensitive to the resonant matter effects.

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Section: Introductionmentioning

confidence: 99%

Exploring the Earth matter effect with atmospheric neutrinos in ice

Agarwalla¹,

Li²,

Mena³

et al. 2012

Preprint

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“…The idea of exploring Earth's interior using neutrino absorption dates back to 1974 [13] where attenuation of neutrino is exploited at energies greater than 10 TeV [14]. There are numerous studies considering neutrinos from different sources, such as man-made neutrinos [13,[15][16][17][18][19][20][21][22][23][24], extraterrestrial neutrinos [19,[25][26][27][28] and atmospheric neutrinos [29][30][31][32]. The neutrino-based absorption tomography of Earth has been performed using atmospheric neutrino data at IceCube detector [33].…”

Section: Jhep08(2021)139mentioning

confidence: 99%

Validating the Earth’s core using atmospheric neutrinos with ICAL at INO

Kumar

Agarwalla

2021

J. High Energ. Phys.

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The Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO) aims to detect atmospheric neutrinos and antineutrinos separately in the multi-GeV range of energies and over a wide range of baselines. By utilizing its charge identification capability, ICAL can efficiently distinguish μ− and μ+ events. Atmospheric neutrinos passing long distances through Earth can be detected at ICAL with good resolution in energy and direction, which enables ICAL to see the density-dependent matter oscillations experienced by upward-going neutrinos in the multi-GeV range of energies. In this work, we explore the possibility of utilizing neutrino oscillations in the presence of matter to extract information about the internal structure of Earth complementary to seismic studies. Using good directional resolution, ICAL would be able to observe 331 μ− and 146 μ+ core-passing events with 500 kt·yr exposure. With this exposure, we show for the first time that the presence of Earth’s core can be independently confirmed at ICAL with a median ∆χ2 of 7.45 (4.83) assuming normal (inverted) mass ordering by ruling out the simple two-layered mantle-crust profile in theory while generating the prospective data with the PREM profile. We observe that in the absence of charge identification capability of ICAL, this sensitivity deteriorates significantly to 3.76 (1.59) for normal (inverted) mass ordering.

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“…The idea of exploring Earth's interior using neutrino absorption dates back to 1974 [10] where attenuation of neutrino is exploited at energies greater than 10 TeV [11]. There are numerous studies considering neutrinos from different sources, such as man-made neutrinos [10,[12][13][14][15][16][17][18][19][20][21], extraterrestrial neutrinos [16,[22][23][24][25] and atmospheric neutrinos [26][27][28][29]. The neutrino-based absorption tomography of Earth has been performed using atmospheric neutrino data at IceCube detector [30].…”

Section: Introductionmentioning

confidence: 99%

Validating the Earth's Core using Atmospheric Neutrinos with ICAL at INO

Kumar,

Agarwalla

2021

Preprint

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The Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO) aims to detect atmospheric neutrinos and antineutrinos separately in the multi-GeV range of energies and over a wide range of baselines. By utilizing its charge identification capability, ICAL can efficiently distinguish µ − and µ + events. Atmospheric neutrinos passing long distances through Earth can be detected at ICAL with good resolution in energy and direction, which enables ICAL to see the density-dependent matter oscillations experienced by upward-going neutrinos in the multi-GeV range of energies. In this work, we explore the possibility of utilizing neutrino oscillations in the presence of matter to extract information about the internal structure of Earth complementary to seismic studies. Using good directional resolution, ICAL would be able to observe 331 µ − and 146 µ + core-passing events with 500 kt•yr exposure. With this exposure, we show for the first time that the presence of Earth's core can be independently confirmed at ICAL with a median ∆χ 2 of 7.45 (4.83) assuming normal (inverted) mass ordering by ruling out the simple two-layered mantle-crust profile in theory while generating the prospective data with the PREM profile. If we generate the data with the simple three-layered core-mantle-crust profile of the Earth, the above-mentioned ∆χ 2 changes to 6.31 (3.92) assuming normal (inverted) mass ordering.

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Simulation of heterogeneity sections obtained by neutrino radiography

Cited by 11 publications

References 42 publications

Exploring the Earth matter effect with atmospheric neutrinos in ice

Exploring the Earth matter effect with atmospheric neutrinos in ice

Validating the Earth’s core using atmospheric neutrinos with ICAL at INO

Validating the Earth's Core using Atmospheric Neutrinos with ICAL at INO

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