@article{76ce11f0dab34c118404c9f8fbb89361,
title = "Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory",
abstract = "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.",
author = "{(Pierre Auger Collaboration)} and A. Aab and P. Abreu and M. Aglietta and Ahn, {E. J.} and {Al Samarai}, I. and Albuquerque, {I. F.M.} and I. Allekotte and Allen, {J. D.} and P. Allison and A. Almela and {Alvarez Castillo}, J. and J. Alvarez-Mu{\~n}iz and M. Ambrosio and Anastasi, {G. A.} and L. Anchordoqui and B. Andrada and S. Andringa and C. Aramo and F. Arqueros and N. Arsene and H. Asorey and P. Assis and J. Aublin and G. Avila and Badescu, {A. M.} and C. Baus and Beatty, {J. J.} and Becker, {K. H.} and Bellido, {J. A.} and C. Berat and Bertaina, {M. E.} and X. Bertou and Biermann, {P. L.} and P. Billoir and J. Biteau and Blaess, {S. G.} and A. Blanco and J. Blazek and C. Bleve and H. Bl{\"u}mer and M. Boh{\'a}{\v c}ov{\'a} and D. Boncioli and C. Bonifazi and N. Borodai and Botti, {A. M.} and J. Brack and I. Brancus and T. Bretz and A. Bridgeman and R. Pelayo",
note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = oct,
day = "31",
doi = "10.1103/PhysRevLett.117.192001",
language = "Ingl{\'e}s",
volume = "117",
journal = "Physical Review Letters",
issn = "0031-9007",
number = "19",
}