Observation of seasonal variation of atmospheric multiple-muon events in the MINOS near and far detectors

, MINOS Collaboration (2015) Observation of seasonal variation of atmospheric multiple-muon events in the MINOS near and far detectors. Physical Review D, 91. ISSN 1550-7998

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Abstract

We report the first observation of seasonal modulations in the rates of cosmic ray multiple-muon events at two underground sites, the MINOS Near Detector with an overburden of 225 mwe, and the MINOS Far Detector site at 2100 mwe. At the deeper site, multiple-muon events with muons separated by more than 8 m exhibit a seasonal rate that peaks during the summer, similar to that of single-muon events. In contrast and unexpectedly, the rate of multiple-muon events with muons separated by less than 5-8 m, and the rate of multiple-muon events in the smaller, shallower Near Detector, exhibit a seasonal rate modulation that peaks in the winter.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
Subjects:
ID Code:
73868
Deposited By:
Deposited On:
18 Jun 2015 05:55
Refereed?:
Yes
Published?:
Published
Last Modified:
04 Dec 2020 02:04