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

H. Prihtiadi, G. Adhikari, E. Barbosa De Souza, N. Carlin, J. J. Choi, S. Choi, M. Djamal, A. C. Ezeribe, L. E. França, C. Ha, I. S. Hahn, E. J. Jeon, J. H. Jo, W. G. Kang, M. Kauer, H. Kim, H. J. Kim, K. W. Kim, S. K. Kim, Y. D. KimY. H. Kim, Y. J. Ko, E. K. Lee, H. S. Lee, J. Lee, J. Y. Lee, M. H. Lee, S. H. Lee, D. S. Leonard, B. B. Manzato, R. H. Maruyama, R. J. Neal, S. L. Olsen, B. J. Park, H. K. Park, H. S. Park, K. S. Park, R. L.C. Pitta, S. J. Ra, C. Rott, K. A. Shin, A. Scraff, N. J.C. Spooner, W. G. Thompson, L. Yang, G. H. Yu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

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.

Original languageEnglish
Article number013
JournalJournal of Cosmology and Astroparticle Physics
Volume2021
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • cosmic ray experiments
  • dark matter detectors
  • dark matter experiments

Fingerprint

Dive into the research topics of 'Measurement of the cosmic muon annual and diurnal flux variation with the COSINE-100 detector'. Together they form a unique fingerprint.

Cite this