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

Adamson, P. and Anghel, I. and Aurisano, A. and Barr, G. and Bishai, M. and Blake, A. and Bock, G. J. and Bogert, D. and Cao, S. V. and Castromonte, C. M. and Childress, S. and Coelho, J. A. B. and Corwin, L. and Cronin-Hennessy, . D. and Jong, J. K. de and Devan, A. V. and Devenish, N. E. and Diwan, M. V. and Escobar, C. O. and Evans, J. J. and Falk, E. and Feldman, G. J. and Frohne, M. V. and Gallagher, H. R. and Gomes, R. A. and Goodman, M. C. and Gouffon, P. and Graf, N. and Gran, R. and Grzelak, K. and Habig, A. and Hahn, S. R. and Hartnell, J. and Hatcher, R. and Holin, A. and Huang, J. and Hylen, J. and Irwin, G. M. and Isvan, Z. and James, C. and Jensen, D. and Kafka, T. and Kasahara, S. M. S. and Koizumi, G. and Kordosky, M. and Kreymer, A. and Lang, K. and Ling, J. and Litchfield, P. J. and Nowak, J. A. (2015) Observation of seasonal variation of atmospheric multiple-muon events in the MINOS near and far detectors. Physical Review D, 91. ISSN 1550-7998

[img]
Preview
PDF (multiseason)
multiseason.pdf - Accepted Version
Available under License Creative Commons Attribution.

Download (242kB)
[img]
Preview
PDF (PhysRevD.91.112006)
PhysRevD.91.112006.pdf - Published Version
Available under License Creative Commons Attribution.

Download (456kB)

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:
29 Mar 2020 03:56