0470864 - FZÚ 2017 RIV US eng J - Journal Article
Aab, A. - Abreu, P. - Aglietta, M. - Blažek, Jiří - Boháčová, Martina - Chudoba, Jiří - Ebr, Jan - Mandát, Dušan - Nečesal, Petr - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - Schovánek, Petr - Trávníček, Petr - Vícha, Jakub … Total 440 authors
Testing hadronic interactions at ultrahigh energies with air showers measured by the Pierre Auger Observatory.
Physical Review Letters. Roč. 117, č. 19 (2016), s. 1-9, č. článku 192001. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LG15014; GA ČR(CZ) GA14-17501S
Research Infrastructure: AUGER-CZ - 90038
Institutional support: RVO:68378271
Keywords : Pierre Auger Observatory * testing hadronic Interactions * ultrahigh energies * air showers
OECD category: Particles and field physics
Impact factor: 8.462, year: 2016
Method of publishing: Limited access
Result website:
https://doi.org/10.1103/PhysRevLett.117.192001DOI: https://doi.org/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 (ECM=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.

Permanent Link: http://hdl.handle.net/11104/0268388