Testing hadronic interactions at ultrahigh energies with air showers measured by the Pierre Auger Observatory
A Aab, P Abreu, M Aglietta, EJ Ahn, I Al Samarai… - Physical review …, 2016 - APS
A Aab, P Abreu, M Aglietta, EJ Ahn, I Al Samarai, IFM Albuquerque, I Allekotte, JD Allen…
Physical review letters, 2016•APSUltrahigh 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 …
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 …
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 (), whose longitudinal development and lateral distribution were simultaneously measured by the Pierre Auger Observatory. The average hadronic shower is () times larger than predicted using the leading LHC-tuned models EPOS-LHC (QGSJetII-04), with a corresponding excess of muons.
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