Unraveling the unexpected seasonal variation of multi-muon events at NOνA

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Unraveling the unexpected seasonal variation of multi-muon events at NOνA

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Unraveling the unexpected seasonal variation of multi-muon events at NOνA

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of Science

ISBN

—

ISSN

1824-8039

e-ISSN

—

Počet stran výsledku

8

Strana od-do

421

Název nakladatele

Sissa Medilab srl

Místo vydání

Trieste

Místo konání akce

Ženeva

Datum konání akce

15. 7. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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