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Observation of seasonal variation of atmospheric multiple-muon events in the NOvA Near Detector

  • Author(s): Acero, MA
  • Adamson, P
  • Aliaga, L
  • Alion, T
  • Allakhverdian, V
  • Altakarli, S
  • Anfimov, N
  • Antoshkin, A
  • Aurisano, A
  • Back, A
  • Backhouse, C
  • Baird, M
  • Balashov, N
  • Baldi, P
  • Bambah, BA
  • Bashar, S
  • Bays, K
  • Bending, S
  • Bernstein, R
  • Bhatnagar, V
  • Bhuyan, B
  • Bian, J
  • Blair, J
  • Booth, AC
  • Bour, P
  • Bromberg, C
  • Buchanan, N
  • Butkevich, A
  • Calvez, S
  • Campbell, M
  • Carroll, TJ
  • Catano-Mur, E
  • Cedeno, A
  • Childress, S
  • Choudhary, BC
  • Chowdhury, B
  • Coan, TE
  • Colo, M
  • Corwin, L
  • Cremonesi, L
  • Davies, GS
  • Derwent, PF
  • Ding, P
  • Djurcic, Z
  • Doyle, D
  • Dukes, EC
  • Duyang, H
  • Edayath, S
  • Ehrlich, R
  • Feldman, GJ
  • Filip, P
  • Flanagan, W
  • Frank, MJ
  • Gallagher, HR
  • Gandrajula, R
  • Gao, F
  • Germani, S
  • Giri, A
  • Gomes, RA
  • Goodman, MC
  • Grichine, V
  • Groh, M
  • Group, R
  • Guo, B
  • Habig, A
  • Hakl, F
  • Hartnell, J
  • Hatcher, R
  • Hatzikoutelis, A
  • Heller, K
  • Hewes, J
  • Himmel, A
  • Holin, A
  • Howard, B
  • Huang, J
  • Hylen, J
  • Jediny, F
  • Johnson, C
  • Judah, M
  • Kakorin, I
  • Kalra, D
  • Kaplan, DM
  • Keloth, R
  • Klimov, O
  • Koerner, LW
  • Kolupaeva, L
  • Kotelnikov, S
  • Kreymer, A
  • Kulenberg, C
  • Kumar, A
  • Kuruppu, CD
  • Kus, V
  • Lackey, T
  • Lang, K
  • Lin, S
  • Lokajicek, M
  • Lozier, J
  • Luchuk, S
  • Magill, S
  • Mann, WA
  • et al.
Abstract

© 2019 American Physical Society. Using two years of data from the NOvA Near Detector at Fermilab, we report a seasonal variation of cosmic ray induced multiple-muon (Nμ≥2) event rates which has an opposite phase to the seasonal variation in the atmospheric temperature. The strength of the seasonal multiple-muon variation is shown to increase as a function of the muon multiplicity. However, no significant dependence of the strength of the seasonal variation of the multiple-muon variation is seen as a function of the muon zenith angle, or the spatial or angular separation between the correlated muons.

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