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Evaluation of the potential of a gamma-ray observatory to detect astrophysical neutrinos through inclined showers
High Energy Physics - Phenomenology · Submitted 23 Aug 2022
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We demonstrate that a ${\rm km^2}$-scale wide field-of-view ground-based gamma-ray observatory could detect a couple of Very-High to Ultra-High energy (VHE-UHE) neutrino events per year with a reasonable pointing accuracy, making it an interesting facility for multi-messenger studies with both photons and neutrinos.
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The abstract, sentence by sentence
We assess the capabilities of a ground-based gamma-ray observatory to detect astrophysical neutrinos with energies in the $100\,{\rm TeV}$ to $100\,{\rm PeV}$ range. The identification of these events would be done through the measurement of very inclined extensive air showers induced by downward-going and upward-going neutrinos. The discrimination of neutrino-induced showers in the overwhelming cosmic-ray background is achieved by analysing the balance of the total electromagnetic and muonic signals of the shower at the ground. We demonstrate that a ${\rm km^2}$-scale wide field-of-view ground-based gamma-ray observatory could detect a couple of Very-High to Ultra-High energy (VHE-UHE) neutrino events per year with a reasonable pointing accuracy, making it an interesting facility for multi-messenger studies with both photons and neutrinos.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We assess the capabilities of a ground-based gamma-ray observatory to detect astrophysical neutrinos with energies in the $100\,{\rm TeV}$ to $100\,{\rm PeV}$ range. | contribution 0.98 | 0.75 | 0.04 | asserted 0.71 |
| s1 | The identification of these events would be done through the measurement of very inclined extensive air showers induced by downward-going and upward-going neutrinos. | method 0.99 | 0.22 | 0.03 | asserted 0.97 |
| s2 | The discrimination of neutrino-induced showers in the overwhelming cosmic-ray background is achieved by analysing the balance of the total electromagnetic and muonic signals of the shower at the ground. | method 1.00 | 0.48 | 0.04 | asserted 1.00 |
| s3 | We demonstrate that a ${\rm km^2}$-scale wide field-of-view ground-based gamma-ray observatory could detect a couple of Very-High to Ultra-High energy (VHE-UHE) neutrino events per year with a reasonable pointing accuracy, making it an interesting facility for multi-messenger studies with both photons and neutrinos. | result 0.78 | 0.88 | 0.93 | hedged possibility 0.63 |
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The paper
Original abstract
We assess the capabilities of a ground-based gamma-ray observatory to detect astrophysical neutrinos with energies in the $100\,{\rm TeV}$ to $100\,{\rm PeV}$ range. The identification of these events would be done through the measurement of very inclined extensive air showers induced by downward-going and upward-going neutrinos. The discrimination of neutrino-induced showers in the overwhelming cosmic-ray background is achieved by analysing the balance of the total electromagnetic and muonic signals of the shower at the ground. We demonstrate that a ${\rm km^2}$-scale wide field-of-view ground-based gamma-ray observatory could detect a couple of Very-High to Ultra-High energy (VHE-UHE) neutrino events per year with a reasonable pointing accuracy, making it an interesting facility for multi-messenger studies with both photons and neutrinos.
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References
How the literature uses it
What this paper does with the arXiv papers it cites
What it cites · 10 sentences without a confident label
Uses the method or tool of 2 papers
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Showers generated by upward-going neutrinos interacting within the Earth's crust and developing in the ground, were simulated using the AIRES framework, version 2.8.4a [ref] .
AIRES: A system for air shower simulations · Simulation Framework and Data Analysis · 1.00
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The simulated values of and for signal and background events are fed into ROOT's Toolkit for Multivariate Data Analysis (TMVA) [ref] to separate the two classes of events as described in the next section.
TMVA - Toolkit for Multivariate Data Analysis · Simulation Framework and Data Analysis · 1.00
Uses data or values from 2 papers
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Taking as a reference LHAASO's fill factor of $4%$ [ref] , the estimated neutrino event rate decreases by a factor of $≈3$ when compared to the initially assumed $80%$ fill factor.
1905.02773 · Impact of the array fill factor · 0.92
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The curvature of the front was taken from [ref] , without any further optimisation.
Reconstruction of Events Recorded with the Surface Detector of the Pierre Auger Observatory · Impact of experimental resolution · 0.96
Cites as background 5 papers
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In this work, we investigate the sensitivity of a ground-based wide field-of-view gamma-ray observatory, such as the LHAASO experiment [ref] or the future SWGO [ref] , for the detection of astrophysical neutrinos in the energy range of hundreds of TeV up to hundreds of PeV.
1905.02773 · Experimental strategy · 0.90
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In this work, we investigate the sensitivity of a ground-based wide field-of-view gamma-ray observatory, such as the LHAASO experiment [ref] or the future SWGO [ref] , for the detection of astrophysical neutrinos in the energy range of hundreds of TeV up to hundreds of PeV.
The Southern Wide-Field Gamma-Ray Observatory (SWGO): A Next-Generation Ground-Based Survey Instrument for VHE Gamma-Ray Astronomy · Experimental strategy · 0.90
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The simultaneous measurement of gamma-rays and neutrinos coming from the same astrophysical source, known as multi-messenger measurements, is highly aspired, and it has in the last years been reshaping the experimental panorama with the addition of new, more ambitious upgrades and new experiments (see, for instance, [ref] ).
2008.04323 · Introduction · 0.87
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