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

0511738 - FZÚ 2020 RIV US eng J - Journal Article
Acero, M. A. - Adamson, P. - Aliaga, L. - Filip, Peter - Hakl, František - Lokajíček, Miloš - Zálešák, Jaroslav … Total 191 authors
Observation of seasonal variation of atmospheric multiple-muon events in the NOvA Near Detector.
Physical Review D. Roč. 99, č. 12 (2019), s. 1-11, č. článku 122004. ISSN 2470-0010. E-ISSN 2470-0029
R&D Projects: GA MŠMT LM2015068
Institutional support: RVO:68378271 ; RVO:67985807
Keywords : experiments in gravity * cosmology * cosmic rays * NOvA * cosmic radiation * experimental results
OECD category: Particles and field physics; Particles and field physics (UIVT-O)
Impact factor: 4.833, year: 2019
Method of publishing: Limited access
https://doi.org/10.1103/physrevd.99.122004

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.

Permanent Link: http://hdl.handle.net/11104/0301973