Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory

(Pierre Auger Collaboration)

doi:10.1103/PhysRevLett.117.192001

Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory

(Pierre Auger Collaboration)

Physics

Universität Siegen
Instituto Superior Tecnico
INAF-IAPS
Sezione di Torino
Fermilab
Laboratoire de Physique Nucléaire et de Hautes Energies
University of São Paulo
CNEA-UNCuyo-CONICET
New York University
Ohio State University
Comisión Nacional de Energía Atómica
Universidad Tecnológica Nacional
Universidad Nacional Autonoma de Mexico
Universidad de Santiago de Compostela
Sezione di Napoli
INFN
Lehman College
Universidad Complutense de Madrid
University of Bucharest
Universidad Industrial de Santander
Observatorio Pierre Auger and Comisión Nacional de Energía Atómica
Observatorio Pierre Auger and Comisión Nacional de Energía Atómica
University Politehnica of Bucharest
Karlsruhe Institute of Technology (KIT)
Bergische Universität Wuppertal
University of Adelaide
UJF-Grenoble 1/CNRS-INSU
Università di Torino and Sezione INFN
Max-Planck-Institut für Radioastronomie
Université Paris 11
Academy of Sciences of the Czech Republic
Universita del Salento
Sezione di Lecce
Institut für Prozessdatenverarbeitung und Elektronik
INFN Laboratori Del Gran Sasso
Universidade Federal do Rio de Janeiro
Deutsches Elektronen-Synchrotron (DESY)
Institute of Nuclear Physics PAN
Colorado State University
'Horia Hulubei' National Institute for Physics and Nuclear Engineering
RWTH Aachen University

Research output: Contribution to journal › Article › peer-review

207 Scopus citations

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.

Original language	British English
Article number	192001
Journal	Physical Review Letters
Volume	117
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.117.192001
State	Published - 31 Oct 2016

Access to Document

10.1103/PhysRevLett.117.192001

OpenUrl availability

Full text

Cite this

@article{ef3b89fb2ece4db4919f27cfc380c80d,

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 \{Van Vliet\}, A.",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = oct,

day = "31",

doi = "10.1103/PhysRevLett.117.192001",

language = "British English",

volume = "117",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "19",

}

TY - JOUR

T1 - Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory

AU - (Pierre Auger Collaboration)

AU - Aab, A.

AU - Abreu, P.

AU - Aglietta, M.

AU - Ahn, E. J.

AU - Al Samarai, I.

AU - Albuquerque, I. F.M.

AU - Allekotte, I.

AU - Allen, J. D.

AU - Allison, P.

AU - Almela, A.

AU - Alvarez Castillo, J.

AU - Alvarez-Muñiz, J.

AU - Ambrosio, M.

AU - Anastasi, G. A.

AU - Anchordoqui, L.

AU - Andrada, B.

AU - Andringa, S.

AU - Aramo, C.

AU - Arqueros, F.

AU - Arsene, N.

AU - Asorey, H.

AU - Assis, P.

AU - Aublin, J.

AU - Avila, G.

AU - Badescu, A. M.

AU - Baus, C.

AU - Beatty, J. J.

AU - Becker, K. H.

AU - Bellido, J. A.

AU - Berat, C.

AU - Bertaina, M. E.

AU - Bertou, X.

AU - Biermann, P. L.

AU - Billoir, P.

AU - Biteau, J.

AU - Blaess, S. G.

AU - Blanco, A.

AU - Blazek, J.

AU - Bleve, C.

AU - Blümer, H.

AU - Boháčová, M.

AU - Boncioli, D.

AU - Bonifazi, C.

AU - Borodai, N.

AU - Botti, A. M.

AU - Brack, J.

AU - Brancus, I.

AU - Bretz, T.

AU - Bridgeman, A.

AU - Van Vliet, A.

PY - 2016/10/31

Y1 - 2016/10/31

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84994571209

U2 - 10.1103/PhysRevLett.117.192001

DO - 10.1103/PhysRevLett.117.192001

M3 - Article

AN - SCOPUS:84994571209

SN - 0031-9007

VL - 117

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

M1 - 192001

ER -

Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory

Abstract

Access to Document

OpenUrl availability

Other files and links

Fingerprint

Cite this