Abstract
The description of the methodology and results of searching for air showers generated by neutral particles such as high energy gamma quanta and astroneutrinos are presented. For this purpose, we conducted a comprehensive analysis of the data: the electron, the muon and the EAS Cerenkov light, and their response time in scintillation and Cherenkov detectors. Air showers with energy more than 5·1018 eV and zenith angle θ ≥ 55∘ are selected and analyzed. Search results indicate a lack of air shower events formed by gamma-rays or high-energy neutrinos, but it does not mean that such air showers do not exist in nature; for example, experiments that recorded showers having a marked low muon content, i.e., “Muonless”, are likely to be candidates for showers produced by neutral primary particles.
Highlights
Air showers from neutrinos can be formed in any part of the atmosphere because of its physical properties, passing quite a long way through matter
The description of the methodology and results of searching for air showers generated by neutral particles such as high energy gamma quanta and astroneutrinos are presented
Search results indicate a lack of air shower events formed by gammarays or high-energy neutrinos, but it does not mean that such air showers do not exist in nature; for example, experiments that recorded showers having a marked low muon content, i.e., “Muonless”, are likely to be candidates for showers produced by neutral primary particles
Summary
Air showers from neutrinos can be formed in any part of the atmosphere because of its physical properties, passing quite a long way through matter. As a rule–it’s strongly inclined showers formed near the detector, i.e., young showers The basis of such showers is the electron-photon component that is scattered at large angles and, has high latency particles relatively to particles formed in the shower core. In such events a large number of peaks of the electrons in the signal scanned from the scintillation detector should be expected [1,2,3]. Preliminary results of the data analysis of the Yakutsk array indicates the absence of EAS events produced by neutrinos, but it does not mean that such EAS do not exist It requires a further collection of strongly inclined showers and careful analysis. This requires improving the methodology for recording and processing showers
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