Published June 9, 2015
| Published + Submitted
Journal Article
Open
Observation of seasonal variation of atmospheric multiple-muon events in the MINOS Near and Far Detectors
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.
Additional Information
© 2015 American Physical Society. Received 31 March 2015; Published 9 June 2015. This work was supported by the U.S. DOE, the United Kingdom STFC, the U.S. NSF, the state and University of Minnesota, and Brazil's FAPESP, CNPq and CAPES. We are grateful to the Minnesota Department of Natural Resources and the personnel of the Soudan Laboratory and Fermilab for their contributions to the experiment. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the United States Department of Energy.Attached Files
Published - PhysRevD.91.112006.pdf
Submitted - 1503.09104v1.pdf
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Additional details
- Eprint ID
- 58784
- Resolver ID
- CaltechAUTHORS:20150706-151252611
- Department of Energy (DOE)
- Science and Technology Facilities Council (STFC)
- NSF
- State of Minnesota
- University of Minnesota
- Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- DE-AC02-07CH11359
- Department of Energy (DOE)
- Created
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2015-07-06Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field