Measurement of the cosmic muon annual and diurnal flux variation with the COSINE-100 detector

Measurement of the cosmic muon annual and diurnal flux variation with the COSINE-100 detector

We report measurements of annual and diurnal modulations of the cosmic-ray muon rate in the Yangyang underground laboratory (Y2L) using 952 days of COSINE-100 data acquired between September 2016 and July 2019. A correlation of the muon rate with the atmospheric temperature is observed and its ampli...

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Veröffentlicht in:Journal of cosmology and astroparticle physics 2021-02, Vol.2021 (2), p.13-13
Hauptverfasser: Prihtiadi, H., Adhikari, G., de Souza, E. Barbosa, Carlin, N., Choi, J.J., Choi, S., Djamal, M., Ezeribe, A.C., França, L.E., Ha, C., Hahn, I.S., Jeon, E.J., Jo, J.H., Kang, W.G., Kauer, M., Kim, H., Kim, H.J., Kim, K.W., Kim, S.K., Kim, Y.D., Kim, Y.H., Ko, Y.J., Lee, E.K., Lee, H.S., Lee, J., Lee, J.Y., Lee, M.H., Lee, S.H., Leonard, D.S., Manzato, B.B., Maruyama, R.H., Neal, R.J., Olsen, S.L., Park, B.J., Park, H.K., Park, H.S., Park, K.S., Pitta, R.L.C, Ra, S.J., Rott, C., Shin, K.A., Scraff, A., Spooner, N.J.C., Thompson, W.G., Yang, L., Yu, G.H.
Format: Artikel
Sprache:eng
Schlagworte:
Atmospheric temperature
Correlation analysis
Cosmic rays
Data acquisition
Modulation
Muons
Particle production
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Beschreibung
Zusammenfassung:We report measurements of annual and diurnal modulations of the cosmic-ray muon rate in the Yangyang underground laboratory (Y2L) using 952 days of COSINE-100 data acquired between September 2016 and July 2019. A correlation of the muon rate with the atmospheric temperature is observed and its amplitude on the muon rate is determined. The effective atmospheric temperature and muon rate variations are positively correlated with a measured effective temperature coefficient of αT = 0.82 ± 0.10. This result is consistent with a model of meson production in the atmosphere. We also searched for a diurnal modulation in the underground muon rate by comparing one-hour intervals. No significant diurnal modulation of the muon rate was observed.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2021/02/013