Publication: Local Muon Density Spectra at Various Zenith Angles Measured with NEVOD-DECOR
Дата
2019
Авторы
Kokoulin, R. P.
Bogdanov, A. G.
Mannocchi, G.
Petrukhin, A. A.
Shutenko, V. V.
Yashin, I. I.
Yurina, E. A.
Кокоулин, Ростислав Павлович
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Аннотация
Data on cosmic ray muon bundles accumulated at the NEVOD-DECOR complex over the period from May 2012 to December 2018 have been analyzed. Local muon density spectra at various zenith angles have been reconstructed and compared with CORSIKA-based simulations. At large zenith angles and high muon multiplicities corresponding to primary particle energies more than about 3 x 10(17) eV an excess of multi-muon events compared to simulations is clearly seen. Present data are compatible with the expectation for recent LHC-adjusted hadron interaction models only under assumption of extremely heavy (iron group nuclei) primary composition. The assumption of a heavy composition is however in contradiction with other EAS observables, such as maximum depth and its fluctuations.
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Local Muon Density Spectra at Various Zenith Angles Measured with NEVOD-DECOR / Kokoulin, RP [et al.] // PHYSICS OF ATOMIC NUCLEI. - 2019. - 82. - № 6. - P. 657-662. - 10.1134/S1063778819660293