Study of the energy deposit of muon bundles in the NEVOD detector
1 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia
2 Istituto di Fisica dello Spazio Interplanetario, INAF, Torino, Italy
3 Dipartimento di Fisica dell' Universita di Torino, Italy
a e-mail: email@example.com
Published online: 4 August 2015
In several cosmic ray experiments, an excess of multi-muon events in comparison with calculations performed in frame of the widely used hadron interaction models was found. In order to solve this puzzle, investigations of muon energy characteristics in EAS are required. An experiment on the measurement of the energy deposit of muon bundles in water has been started with the NEVOD-DECOR experimental complex. The results of the analysis of the first experimental data are discussed. It has been found that the average specific energy deposit in the Cherenkov calorimeter appreciably increases with zenith angle, thus reflecting the increase of the mean muon energy in the bundles. A possible evidence for an increase of the energy deposit at primary energies above 1017 eV is observed.
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