Local Muon Density Spectra at Various Zenith Angles Measured with NEVOD-DECOR
- Autores: Kokoulin R.P.1, Bogdanov A.G.1, Mannocchi G.2, Petrukhin A.A.1, Shutenko V.V.1, Trinchero G.2, Yashin I.I.1, Yurina E.A.1
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Afiliações:
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
- Osservatorio Astrofisico di Torino—INAF
- Edição: Volume 82, Nº 6 (2019)
- Páginas: 657-662
- Seção: Elementary Particles and Fields
- URL: https://journals.rcsi.science/1063-7788/article/view/194662
- DOI: https://doi.org/10.1134/S1063778819660293
- ID: 194662
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Resumo
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 × 1017 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.
Sobre autores
R. Kokoulin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Autor responsável pela correspondência
Email: rpkokoulin@mephi.ru
Rússia, Moscow
A. Bogdanov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: rpkokoulin@mephi.ru
Rússia, Moscow
G. Mannocchi
Osservatorio Astrofisico di Torino—INAF
Email: rpkokoulin@mephi.ru
Itália, Torino
A. Petrukhin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: rpkokoulin@mephi.ru
Rússia, Moscow
V. Shutenko
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: rpkokoulin@mephi.ru
Rússia, Moscow
G. Trinchero
Osservatorio Astrofisico di Torino—INAF
Email: rpkokoulin@mephi.ru
Itália, Torino
I. Yashin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: rpkokoulin@mephi.ru
Rússia, Moscow
E. Yurina
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: rpkokoulin@mephi.ru
Rússia, Moscow
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