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Lateral distribution of muons in IceCube cosmic ray events

Contributeurs/tricesIceCube Collaboration
Date de publication2013
Résumé

In cosmic ray air showers, the muon lateral separation from the center of the shower is a measure of the transverse momentum that the muon parent acquired in the cosmic ray interaction. IceCube has observed cosmic ray interactions that produce muons laterally separated by up to 400 m from the shower core, a factor of 6 larger distance than previous measurements. These muons originate in high pT (>2  GeV/c) interactions from the incident cosmic ray, or high-energy secondary interactions. The separation distribution shows a transition to a power law at large values, indicating the presence of a hard pT component that can be described by perturbative quantum chromodynamics. However, the rates and the zenith angle distributions of these events are not well reproduced with the cosmic ray models tested here, even those that include charm interactions. This discrepancy may be explained by a larger fraction of kaons and charmed particles than is currently incorporated in the simulations.

Citation (format ISO)
IceCube Collaboration. Lateral distribution of muons in IceCube cosmic ray events. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2013, vol. 87, n° 01, p. 012005. doi: 10.1103/PhysRevD.87.012005
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Article (Published version)
accessLevelPublic
Identifiants
ISSN du journal1550-2368
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Informations techniques

Création04/08/2014 11:33:00
Première validation04/08/2014 11:33:00
Heure de mise à jour14/03/2023 21:29:46
Changement de statut14/03/2023 21:29:46
Dernière indexation16/01/2024 11:29:35
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