Neutrino Tomography – Learning About The Earth’s Interior Using 
The Propagation Of Neutrinos

Winter, Walter

doi:10.1007/s11038-006-9101-y

Cited by 33 publications

(32 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this statistical analysis, we assumeρ = 2.7 g/cm 3 which corresponds to the mean value of the Earth's crust. We also assume L = 300 km and ∆χ 2 is defined by 2) where N b = 100 is number of energy bins, σ…”

Section: Tomography By Neutrino Pair Beammentioning

confidence: 99%

See 1 more Smart Citation

Tomography by neutrino pair beam

Okui¹

2019

Proceedings of the 4th KMI International Symposium — PoS(KMI2019)

View full text Add to dashboard Cite

We consider the possibility of neutrino tomography by using the neutrino pair beam. The idea of neutrino tomography is imaging of the Earth's interior structure by neutrino experiments. We assume the neutrino pair beam which has been recently proposed as an attractive neutrino source. The beam produces a huge amount of neutrino and antineutrino pairs from the circulating partially stripped ions. The beam enables us to measure the energy spectrum of the neutrino oscillation probability precisely together with a large detector. The neutrino pair beam can give a better sensitivity for probing the Earth's crust compared to current neutrino sources. Furthermore, we propose a method to reconstruct the density profile by the analytic formula of the oscillation probability that incorporates the matter effect up to the second order of perturbation.

show abstract

Section: Tomography By Neutrino Pair Beammentioning

confidence: 99%

“…The first one is the absorption tomography and the second is the oscillation tomography. These methods have been reviewed in [2]. Now we focus on the neutrino oscillation tomography which is based on the matter effects of the neutrino oscillation.…”

Section: Introductionmentioning

confidence: 99%

Tomography by neutrino pair beam

Okui¹

2019

Proceedings of the 4th KMI International Symposium — PoS(KMI2019)

View full text Add to dashboard Cite

show abstract

“…The angle between P x and the axis A d equals 2θ x , and θ x is defined in (14). Averaging of oscillations in the layer d means that P x evolves to its projection on A d :…”

Section: Attenuation Effect and Decoherencementioning

confidence: 99%

Attenuation effect and neutrino oscillation tomography

Ioannisian

Smirnov

2017

Phys. Rev. D

View full text Add to dashboard Cite

Attenuation effect is the effect of weakening of contributions to the oscillation signal from remote structures of matter density profile. The effect is a consequence of integration over the neutrino energy within the energy resolution interval. Structures of a density profile situated at distances larger than the attenuation length, λ att , are not "seen". We show that the origins of attenuation are (i) averaging of oscillations in certain layer(s) of matter, (ii) smallness of matter effect: ≡ 2EV /∆m 2 1, where V is the matter potential, and (iii) specific initial and final states on neutrinos. We elaborate on the graphic description of the attenuation which allows us to compute explicitly the effects in the 2 order for various density profiles and oscillation channels. The attenuation in the case of partial averaging is described. The effect is crucial for interpretation of oscillation data and for the oscillation tomography of the Earth with low energy (solar, supernova, atmospheric, etc.) neutrinos.

show abstract

“…Using neutrinos for Earth tomography is a dream much older than modern oscillation physics, see Ref. [1] for a review: Early proposals exploit the increase of the neutrino cross sections with energy, leading to significant neutrino absorption over the earth's diameter for energies larger Figure 1: Neutrino oscillation model of the earth. Different layers of the earth used for this analysis, adopted from the PREM model [26]; 1: Crust, 2: Lower Lithosphere, 3: Upper Mesosphere (mantle), 4: Transition zone, 5: Lower Mesosphere, 6: Outer core, 7: Inner core.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric neutrino oscillations for Earth tomography

Winter

2016

Nuclear Physics B

Self Cite

View full text Add to dashboard Cite

Modern proposed atmospheric neutrino oscillation experiments, such as PINGU in the Antarctic ice or ORCA in Mediterranean sea water, aim for precision measurements of the oscillation parameters including the ordering of the neutrino masses. They can, however, go far beyond that: Since neutrino oscillations are affected by the coherent forward scattering with matter, neutrinos can provide a new view on the interior of the earth. We show that the proposed atmospheric oscillation experiments can measure the lower mantle density of the earth with a precision at the level of a few percent, including the uncertainties of the oscillation parameters and correlations among different density layers. While the earth's core is, in principle, accessible by the angular resolution, new technology would be required to extract degeneracy-free information.arXiv:1511.05154v2 [hep-ph] 5 Apr 2016 than a few TeV [2,3,4,5,6,7,8,9,10,11,12]. While absorption tomography is conceptually appealing, a technically feasible and scientifically competitive approach to neutrino Earth tomography probably requires neutrino oscillations. The condensing evidence for neutrino oscillations by the Super-Kamiokande [13], SNO [14], and KamLAND [15] experiments between about 1998 and 2004 was concluded with the measurement of a non-zero value of the last missing mixing angle θ 13 by Daya Bay [16] and RENO [17] in 2012 -and was finally rewarded with the Nobel prize in 2015 for the discovery of neutrino oscillations to Takaaki Kajita (Super-Kamiokande) and Arthur B. McDonald (SNO).Modern neutrino oscillation facilities aim for precision measurements and are designed to measure the unknown parameters, such as mass ordering and CP violation. Since coherent forward scattering in Earth matter affects neutrino oscillations [18,19], it can used as an alternative approach for Earth tomography compared to neutrino absorption. It in principle allows for precision matter density measurements along the propagation path of these neutrinos [20,21], and the required energies are much lower. While neutrino absorption tomography can be compared to X-ray tomography, neutrino oscillation tomography has one interesting additional feature: since the quantum mechanical operators in different density layers do not commute, even the reconstruction from a single baseline (propagation distance) carries information how the structure along the propagation path is arranged [22,23,24,25].Atmospheric neutrinos are produced in the earth's atmosphere by the interactions of cosmic rays continuously bombarding the earth. The generic setup, from the point of view of the detector, is illustrated in Fig. 1: neutrinos are detected from different zenith angle directions θ z (the angle between zenith -from the detector's viewpoint -and incoming neutrino), which correspond to cones through the earth with different baselines L = 2R E cos θ z (R E : Earth radius). Within the zenith angle resolution (illustrated in left half of figure), the oscillation paths can be distinguished. We will test the str...

show abstract

Neutrino Tomography – Learning About The Earth’s Interior Using The Propagation Of Neutrinos

Cited by 33 publications

References 52 publications

Tomography by neutrino pair beam

Tomography by neutrino pair beam

Attenuation effect and neutrino oscillation tomography

Atmospheric neutrino oscillations for Earth tomography

Contact Info

Product

Resources

About