The IceCube Neutrino observatory has discovered an astrophysical neutrino flux in the energy range >>>1~TeV with their highest energy event ∼\sim∼3~PeV. Although IceCube has excellent muon flavor identification, their ability to identify tau neutrinos is highly limited. We present a concept for observing the tau neutrino flux in the 1–100 PeV range, where a flux is guaranteed and its observation would give further support to the astrophysical origin of the IceCube flux. The design of the observatory requires an acceptance ⟨AΩ⟩>\langle A\Omega\rangle >⟨AΩ⟩>400~m2^22~sr×(EPeV)1.5\times\left(\frac{E}{\mathrm{PeV}}\right)^{1.5}×(PeVE)1.5 to match the ∼\sim∼1~PeV IceCube all-flavor event rate in tau neutrinos provided a νe:νμ:ντ=1:1:1\nu_e:\nu_\mu:\nu_\tau = 1:1:1νe:νμ:ντ=1:1:1 flavor ratio. The energy dependence of the acceptance is designed to match the IceCube best-fit spectral flux index of E−2.5E^{-2.5}E−2.5 so the spectrum is evenly sampled in the 1–100 PeV range. We present a background-free implementation with pointing resolution <1∘<1^\circ<1∘ to begin the era of high energy tau neutrino astronomy.
Autor(es):ROMERO-WOLF, Andres
CARVALHO, Washington Carvalho
ALVAREZ-MUNIZ, Jaime
BAZO, José
BELLIDO, Jose
CUMMINGS, Austin
GAGO, Alberto
SCHOORLEMMER, Harm
WISSEL, Stephanie
ZAS, Enrique
Año: 2021
Título de la revista: PoS - 36th International Cosmic Ray Conference (ICRC2019)
Volumen: 358
Url: https://doi.org/10.22323/1.358.0993