Active-sterile neutrino oscillations at INO-ICAL over a wide mass-squared range
We perform a detailed analysis for the prospects of detecting active-sterile oscillations involving a light sterile neutrino, over a large \(\Delta m^2_{41}\) range of \(10^{-5}\) eV\(^2\) to \(10^2\) eV\(^2\), using 10 years of atmospheric neutrino data expected from the proposed 50 kt magnetized I...
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Abstract | We perform a detailed analysis for the prospects of detecting active-sterile oscillations involving a light sterile neutrino, over a large \(\Delta m^2_{41}\) range of \(10^{-5}\) eV\(^2\) to \(10^2\) eV\(^2\), using 10 years of atmospheric neutrino data expected from the proposed 50 kt magnetized ICAL detector at the INO. This detector can observe the atmospheric \(\nu_{\mu}\) and \(\bar\nu_{\mu}\) separately over a wide range of energies and baselines, making it sensitive to the magnitude and sign of \(\Delta m^2_{41}\) over a large range. If there is no light sterile neutrino, ICAL can place competitive upper limit on \(|U_{\mu 4}|^2 \lesssim 0.02\) at 90\% C.L. for \(\Delta m^2_{41}\) in the range \((0.5 - 5) \times 10^{-3}\) eV\(^2\). For the same \(|\Delta m^2_{41}|\) range, ICAL would be able to determine its sign, exploiting the Earth's matter effect in \(\mu^{-}\) and \(\mu^{+}\) events separately if there is indeed a light sterile neutrino in Nature. This would help identify the neutrino mass ordering in the four-neutrino mixing scenario. |
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AbstractList | We perform a detailed analysis for the prospects of detecting active-sterile
oscillations involving a light sterile neutrino, over a large $\Delta m^2_{41}$
range of $10^{-5}$ eV$^2$ to $10^2$ eV$^2$, using 10 years of atmospheric
neutrino data expected from the proposed 50 kt magnetized ICAL detector at the
INO. This detector can observe the atmospheric $\nu_{\mu}$ and $\bar\nu_{\mu}$
separately over a wide range of energies and baselines, making it sensitive to
the magnitude and sign of $\Delta m^2_{41}$ over a large range. If there is no
light sterile neutrino, ICAL can place competitive upper limit on $|U_{\mu
4}|^2 \lesssim 0.02$ at 90\% C.L. for $\Delta m^2_{41}$ in the range $(0.5 - 5)
\times 10^{-3}$ eV$^2$. For the same $|\Delta m^2_{41}|$ range, ICAL would be
able to determine its sign, exploiting the Earth's matter effect in $\mu^{-}$
and $\mu^{+}$ events separately if there is indeed a light sterile neutrino in
Nature. This would help identify the neutrino mass ordering in the
four-neutrino mixing scenario. We perform a detailed analysis for the prospects of detecting active-sterile oscillations involving a light sterile neutrino, over a large \(\Delta m^2_{41}\) range of \(10^{-5}\) eV\(^2\) to \(10^2\) eV\(^2\), using 10 years of atmospheric neutrino data expected from the proposed 50 kt magnetized ICAL detector at the INO. This detector can observe the atmospheric \(\nu_{\mu}\) and \(\bar\nu_{\mu}\) separately over a wide range of energies and baselines, making it sensitive to the magnitude and sign of \(\Delta m^2_{41}\) over a large range. If there is no light sterile neutrino, ICAL can place competitive upper limit on \(|U_{\mu 4}|^2 \lesssim 0.02\) at 90\% C.L. for \(\Delta m^2_{41}\) in the range \((0.5 - 5) \times 10^{-3}\) eV\(^2\). For the same \(|\Delta m^2_{41}|\) range, ICAL would be able to determine its sign, exploiting the Earth's matter effect in \(\mu^{-}\) and \(\mu^{+}\) events separately if there is indeed a light sterile neutrino in Nature. This would help identify the neutrino mass ordering in the four-neutrino mixing scenario. |
Author | Agarwalla, Sanjib Kumar Dighe, Amol Thakore, Tarak Moon Moon Devi |
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BackLink | https://doi.org/10.48550/arXiv.1804.09613$$DView paper in arXiv https://doi.org/10.1007/JHEP08(2018)022$$DView published paper (Access to full text may be restricted) |
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Snippet | We perform a detailed analysis for the prospects of detecting active-sterile oscillations involving a light sterile neutrino, over a large \(\Delta m^2_{41}\)... We perform a detailed analysis for the prospects of detecting active-sterile oscillations involving a light sterile neutrino, over a large $\Delta m^2_{41}$... |
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SubjectTerms | Neutrinos Oscillations Physics - High Energy Physics - Experiment Physics - High Energy Physics - Phenomenology Physics - Instrumentation and Detectors |
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Title | Active-sterile neutrino oscillations at INO-ICAL over a wide mass-squared range |
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