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

Kumar, Anil; Agarwalla, Sanjib Kumar

doi:10.1007/jhep08(2021)139

Cited by 14 publications

(9 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As far as the muon direction is concerned, the ICAL detector is capable of providing muon angular resolution of less than 1 • . Using this good detector response, the ICAL Collaboration has performed various analyses involving standard oscillations using JHEP03(2022)050 atmospheric neutrino [78,[81][82][83][84][85][86][87][88][89][90]. ICAL provides a unique avenue to probe a plethora of BSM scenarios [49,53,[91][92][93][94][95][96][97][98].…”

Section: Jhep03(2022)050mentioning

confidence: 99%

Probing Lorentz Invariance Violation with atmospheric neutrinos at INO-ICAL

Sahoo

Kumar

Agarwalla

2022

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

The possibility of Lorentz Invariance Violation (LIV) may appear in unified theories, such as string theory, which allow the existence of a new space-time structure at the Planck scale (Mp ∼ 1019 GeV). This effect can be observed at low energies with a strength of ∼ 1/Mp using the perturbative approach. In the minimal Standard Model extension (SME) framework, the neutrino mass-induced flavor oscillation gets modified in the presence of LIV. The Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO) offers a unique window to probe these LIV parameters by observing atmospheric neutrinos and antineutrinos separately over a wide range of baselines in the multi-GeV energy range. In this paper, for the first time, we study in detail how the CPT-violating LIV parameters (aμτ, aeμ, aeτ) can alter muon survival probabilities and expected μ− and μ+ event rates at ICAL. Using 500 kt·yr exposure of ICAL, we place stringent bounds on these CPT-violating LIV parameters at 95% C.L., which are slightly better than the present Super-Kamiokande limits. We demonstrate the advantage of incorporating hadron energy information and charge identification capability at ICAL while constraining these LIV parameters. Further, the impact of the marginalization over the oscillation parameters and choice of true values of sin2θ23 on LIV constraints is described. We also study the impact of these LIV parameters on mass ordering determination and precision measurement of atmospheric oscillation parameters.

show abstract

Section: Jhep03(2022)050mentioning

confidence: 99%

Probing Lorentz Invariance Violation with atmospheric neutrinos at INO-ICAL

Sahoo

Kumar

Agarwalla

2022

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…If we calculate the mean free path of neutrinos below ∼TeV, though, we will find that atmospheric flux attenuation becomes small to the point that it is experimentally unobservable. This brings us to the other way of measuring the Earth's interior: probing the Earth's density with neutrino oscillations [23][24][25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

DUNE atmospheric neutrinos: Earth tomography

Kelly

Machado

Martinez-Soler

et al. 2022

J. High Energ. Phys.

View full text Add to dashboard Cite

In this paper we show that the DUNE experiment can measure the Earth’s density profile by analyzing atmospheric neutrino oscillations. The crucial feature that enables such measurement is the detailed event reconstruction capability of liquid argon time projection chambers. This allows for studying the sub-GeV atmospheric neutrino component, which bears a rich oscillation phenomenology, strongly dependent on the matter potential sourced by the Earth. We provide a pedagogical discussion of the MSW and parametric resonances and their role in measuring the core and mantle densities. By performing a detailed simulation, accounting for particle reconstruction at DUNE, nuclear physics effects relevant to neutrino-argon interactions and several uncertainties on the atmospheric neutrino flux, we manage to obtain a robust estimate of DUNE’s sensitivity to the Earth matter profile. We find that DUNE can measure the total mass of the Earth at 9.3% precision with an exposure of 400 kton-year. By accounting for previous measurements of the total mass and moment of inertia of the Earth, the core, lower mantle and upper mantle densities can be determined with 9%, 14% and 22% precision, respectively, for the same exposure. Finally, for a low exposure run of 60 kton-year, which would correspond to two far detectors running for three years, we have found that the core density could be measured by DUNE at ∼ 30% precision.

show abstract

“…If we calculate the mean free path of neutrinos below "TeV, though, we will find that atmospheric flux attenuation becomes small to the point that it is experimentally unobservable. This brings us to the other way of measuring the Earth's interior: probing the Earth's density with neutrino oscillations [19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

DUNE atmospheric neutrinos: Earth Tomography

Kelly,

Machado,

Martinez-Soler

et al. 2021

Preprint

View full text Add to dashboard Cite

In this paper we show that the DUNE experiment can measure the Earth's density profile by analyzing atmospheric neutrino oscillations. The crucial feature that enables such measurement is the detailed event reconstruction capability of liquid argon time projection chambers. This allows for studying the sub-GeV atmospheric neutrino component, which bears a rich oscillation phenomenology, strongly dependent on the matter potential sourced by the Earth. We provide a pedagogical discussion of the MSW and parametric resonances and their role in measuring the core and mantle densities. By performing a detailed simulation, accounting for particle reconstruction at DUNE, nuclear physics effects relevant to neutrino-argon interactions and several uncertainties on the atmospheric neutrino flux, we manage to obtain a robust estimate of DUNE's sensitivity to the Earth matter profile. We find that DUNE can measure the total mass of the Earth at 8.4% precision with an exposure of 400 kton-year. By accounting for previous measurements of the total mass and moment of inertia of the Earth, the core, lower mantle and upper mantle densities can be determined with 8.8%, 13% and 22% precision, respectively, for the same exposure. Finally, for a low exposure run of 60 kton-year, which would correspond to two far detectors running for three years, we have found that the core density could be measured by DUNE at " 30% precision.

show abstract

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

Cited by 14 publications

References 73 publications

Probing Lorentz Invariance Violation with atmospheric neutrinos at INO-ICAL

Probing Lorentz Invariance Violation with atmospheric neutrinos at INO-ICAL

DUNE atmospheric neutrinos: Earth tomography

DUNE atmospheric neutrinos: Earth Tomography

Contact Info

Product

Resources

About