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Zavrtanik M, Zepeda A, Zimmermann B, Ziolkowski M, Zong Z, Zuccarello F (2016)
Publication Status: Published
Publication Type: Journal article
Publication year: 2016
Publisher: AMER PHYSICAL SOC
Book Volume: 117
Article Number: ARTN 192001
Journal Issue: 19
DOI: 10.1103/PhysRevLett.117.192001
Ultrahigh energy cosmic ray air showers probe particle physics at energies beyond the reach of accelerators. Here we introduce a new method to test hadronic interaction models without relying on the absolute energy calibration, and apply it to events with primary energy 6-16 EeV (E-CM = 110-170 TeV), whose longitudinal development and lateral distribution were simultaneously measured by the Pierre Auger Observatory. The average hadronic shower is 1.33 +/- 0.16 (1.61 +/- 0.21) times larger than predicted using the leading LHC-tuned models EPOS-LHC (QGSJetII-04), with a corresponding excess of muons.
APA:
Aab, A., Abreu, P., Aglietta, M., Ahn, E.J., Al Samarai, I., Albuquerque, I.F.M.,... Zuccarello, F. (2016). Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory. Physical Review Letters, 117(19). https://dx.doi.org/10.1103/PhysRevLett.117.192001
MLA:
Aab, A., et al. "Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory." Physical Review Letters 117.19 (2016).
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