Time variations in the deep underground muon flux
S. Cecchini, M. Cozzi, H. Dekhissi, J. Derkaoui, G. Giacomelli, M., Giorgini, F. Maaroufi, G. Mandrioli, A. Margiotta, A. Moussa, L. Patrizii, M., Sioli, G. Sirri, M. Spurio, V. Togo
TL;DR
This study analyzes over 35 million underground muon events to detect flux variations, employing statistical and spectral methods to identify clusters and periodic signals in the data.
Contribution
It introduces comprehensive statistical analyses, including Scan Statistics and Lomb-Scargle methods, to investigate muon flux variations in underground data.
Findings
No significant event clusters detected.
Periodic variations, if any, are below detection thresholds.
Methodology improves sensitivity for underground muon flux studies.
Abstract
More than 35 million high-energy muons collected with the MACRO detector at the underground Gran Sasso Laboratory have been used to search for flux variations of different nature. Two kinds of studies were carried out: a search for the occurrence of clusters of events and a search for periodic variations. Different analysis methods, including the Scan Statistics test and the Lomb-Scargle spectral analysis have been applied to the data.
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