Abstract
This paper is aimed at studying the feasibility of building an Earth-skimming cosmic tau neutrinos detector, with the aim of eventually identifying the ideal dimensions of a natural site mountain-valley for the detection of very high energy neutrinos tau range from 1 0 16 eV to 1 0 20 eV , as well as possibly locate one such site in Algeria. First, a Monte Carlo simulation of the neutrino-[mountain] matter interaction as well as the resulting decay of the tau lepton is conducted to determine the optimal dimensions of the mountain as well as the location of the tau decay in the valley. Second, a CORSIKA (COsmic Ray Simulation for KAscade) simulation with the CONEX option is conducted to track the evolution of the almost horizontal air shower initiated by the tau lepton. Many particles are produced, which are part of the shower components: electrons, muons, gammas, pions, etc. The study of the spatial distribution of these particles enables the discovery of the optimal width of the valley, and consequently, the distance at which to lay the detection network.
Highlights
Ultrahigh energy (UHE) tau neutrinos are produced by neutrino oscillation phenomena of other flavours during their journey from the creation site in the cosmos to the arrival point on Earth
Earth matter crossed by neutrinos does not meet the required size for the detection of low- and medium-energy neutrinos, which is advantageous in our case
This research studied the use of a configuration as a possible outline for the detection of UHE tau neutrinos
Summary
Ultrahigh energy (UHE) tau neutrinos are produced by neutrino oscillation phenomena of other flavours (electron and muon neutrinos) during their journey from the creation site in the cosmos to the arrival point on Earth. The study of Earth-skimming UHE tau neutrinos was proposed as a method to apply in the search for neutrinos of cosmic origin by several research studies around the year 2000 [2,3,4,5]. Various promising experiments for the detection of neutrino tau at higher energies through tau-induced air showers are developing and using Cherenkov telescopes, we cite GRAND [6], BEACON [7], and TRINITY [8], who shows that a small system of detection is sufficient to reach sensitivities that comparable with ARA [9] or ARIANA [10] experiments. It should be noted that this configuration has already been proposed by the LPSC team at Grenoble [14, 15]
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