Seasonal variation of multiple-muon cosmic ray air showers observed in the NOvA detector on the surface
Nenhuma Miniatura disponível
Data
2021
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
We report the rate of cosmic ray air showers with multiplicities exceeding 15 muon tracks recorded in the
NOvA Far Detector between May 2016 and May 2018. The detector is located on the surface under an
overburden of 3.6 meters water equivalent. We observe a seasonal dependence in the rate of multiple-muon
showers, which varies in magnitude with multiplicity and zenith angle. During this period, the effective
atmospheric temperature and surface pressure ranged between 210 K and 230 K and 940 mbar and
990 mbar, respectively; the shower rates are anticorrelated with the variation in the effective temperature.
The variations are about 30% larger for the highest multiplicities than the lowest multiplicities and 20%
larger for showers near the horizon than vertical showers.
Descrição
Palavras-chave
Citação
ACERO, M. A. et al. Seasonal variation of multiple-muon cosmic ray air showers observed in the NOvA detector on the surface. Physical Review D, Washington, v. 104, n. 1, e012014, 2021. DOI: 10.1103/PhysRevD.104.012014. Disponível em: https://journals.aps.org/prd/pdf/10.1103/PhysRevD.104.012014. Acesso em: 16 maio 2023.