Seasonal Variation of Atmospheric Leptons as a Probe of Charm

Desiati, P.; Gaisser, T. K.

doi:10.1103/physrevlett.105.121102

Cited by 31 publications

(25 citation statements)

References 24 publications

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“…In the future, it will be possible for the IceCube detector to precisely measure the prompt contribution and to constrain the all-nucleon primary flux before and around the knee. With more data accumulating, independent verification of the prompt measurement based on seasonal variations of the muon flux [90] will soon become feasible as well.…”

Section: Discussionmentioning

confidence: 99%

Characterization of the atmospheric muon flux in IceCube

Aartsen¹,

Abraham²,

Ackermann³

et al. 2016

Astroparticle Physics

101

117

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Muons produced in atmospheric cosmic ray showers account for the by far dominant part of the event yield in large-volume underground particle detectors. The IceCube detector, with an instrumented volume of about a cubic kilometer, has the potential to conduct unique investigations on atmospheric muons by exploiting the large collection area and the possibility to track particles over a long distance. Through detailed reconstruction of energy deposition along the tracks, the characteristics of muon bundles can be quantified, and individual particles of exceptionally high energy identified. The data can then be used to constrain the cosmic ray primary flux and the contribution to atmospheric lepton fluxes from prompt decays of short-lived hadrons.In this paper, techniques for the extraction of physical measurements from atmospheric muon events are described and first results are presented. The multiplicity spectrum of TeV muons in cosmic ray air showers for primaries in the energy range from the knee to the ankle is derived and found to be consistent with recent results from surface detectors. The single muon energy spectrum is determined up to PeV energies and shows a clear indication for the 2 emergence of a distinct spectral component from prompt decays of short-lived hadrons. The magnitude of the prompt flux, which should include a substantial contribution from light vector meson di-muon decays, is consistent with current theoretical predictions.The variety of measurements and high event statistics can also be exploited for the evaluation of systematic effects. In the course of this study, internal inconsistencies in the zenith angle distribution of events were found which indicate the presence of an unexplained effect outside the currently applied range of detector systematics. The underlying cause could be related to the hadronic interaction models used to describe muon production in air showers.

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Section: Discussionmentioning

confidence: 99%

Characterization of the atmospheric muon flux in IceCube

Aartsen¹,

Abraham²,

Ackermann³

et al. 2016

Astroparticle Physics

101

117

View full text Add to dashboard Cite

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“…It is known that the cosmic-ray muon intensity is modulated by seasonal temperature variations of the atmosphere [42,46,47]. Thus, signals in COSINE-100 that are induced by cosmic-ray muons could mimic dark matter Fig.…”

Section: Muon Detector Systemmentioning

confidence: 99%

Initial performance of the COSINE-100 experiment

et al. 2018

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COSINE is a dark matter search experiment based on an array of low background NaI(Tl) crystals located at the Yangyang underground laboratory. The assembly of COSINE-100 was completed in the summer of 2016 and the detector is currently collecting physics quality data aimed at reproducing the DAMA/LIBRA experiment that reported an annual modulation signal. Stable operation has been achieved and will continue for at least 2 years. Here, we describe the design of COSINE-100, including the shielding arrangement, the configuration of the NaI(Tl) crystal detection elements, the veto systems, and the associated operational systems, and we show the current performance of the experiment. a

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“…The probability of decay increases for larger zenith angles, because the pions and kaons spend more of their livetime at higher altitudes where the target density is lower so they are less likely to interact. The muon flux is [1,15] …”

Section: Introductionmentioning

confidence: 99%