Measurements of the average muon energy in inclined muon bundles in the NEVOD-DECOR experiment
July 29, 2021
In the NEVOD-DECOR experiment, the study of the energy characteristics of muon bundles is carried out, aimed at the solution of “muon puzzle” (the excess of multi-muon events in cosmic rays in comparison with the results of calculations). The experimental complex includes a Cherenkov water calorimeter and a coordinate-tracking detector. The energy deposit of muon bundles is measured from the response of the NEVOD calorimeter, and coordinate-tracking detector DECOR allows to determine the number of muons in the bundles and their arrival directions. Experimental estimates of the average muon energy in the bundles and their dependence on the zenith angle and primary energy in the range from 10 PeV to 1000 PeV have been obtained and compared with the results of calculations performed using the simulation based on the CORSIKA software package using models of hadronic interactions QGSJET-II-04 and SIBYLL-2.3c.
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