NEVOD-DECOR Experiment on the Measurement of the Energy Deposit of Cosmic Ray Muon Bundles

The excess of multi-muon events in comparison with calculations which was found in many experiments at ultrahigh energies of extensive air showers (EAS) cannot be explained using contemporary models of hadron interactions. The existence of this excess was called the “muon puzzle”. One of the ways to solve this problem is the study of the energy characteristics of EAS muon component. For this purpose, the energy deposit of cosmic ray muon bundles is measured in the NEVOD-DECOR experiment. The registration of muon bundles in a wide range of zenith angles allows one to explore a wide range of energies of the primary particles of cosmic rays (from 10 to 1000 PeV) in frame of a single experiment. The results of the measurements of the energy deposit of bundles over a long observation period are presented.

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