Unraveling the unexpected seasonal variation of multi-muon events at NOνA
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00645942" target="_blank" >RIV/68378271:_____/25:00645942 - isvavai.cz</a>
Result on the web
<a href="https://pos.sissa.it/501/421/pdf" target="_blank" >https://pos.sissa.it/501/421/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.501.0421" target="_blank" >10.22323/1.501.0421</a>
Alternative languages
Result language
angličtina
Original language name
Unraveling the unexpected seasonal variation of multi-muon events at NOνA
Original language description
The seasonal variation of single muons is a well-understood phenomenon, mainly driven by a positive correlation with temperature fluctuations in the atmospheric profiles. However, the rate of multi-muon events recorded by various experiments has shown an intriguing opposite seasonal modulation that remains unexplained by previous research. For the first time, we quantitatively describe the phase and amplitudes of the seasonal variation for cosmic multi-muon events detected by the NOνA Near Detector. We can further explain the amplitude dependence for multi-muon events across various multiplicities. For our analysis, we use the general-purpose Monte Carlo code FLUKA-CERN 4.4.1, which provides a more realistic description of the detector, atmospheric profiles, and muon propagation underground. Finally, we compare our results with those obtained from the latest CORSIKA version 7.8010, utilizing the most up-to-date high-energy hadronic interaction models EPOS LHC-R and QGSJETIII-01. Our findings provide a fresh perspective on seasonal muon flux modulation and offer key constraints for cosmic-ray interaction models and underground detector studies.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of Science
ISBN
—
ISSN
1824-8039
e-ISSN
—
Number of pages
8
Pages from-to
421
Publisher name
Sissa Medilab srl
Place of publication
Trieste
Event location
Ženeva
Event date
Jul 15, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—