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

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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 (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.

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Most cited references 22

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A. Fassò, G. Battistoni, P. Sala … (2007)

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Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above1017.8 eV

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Depth of maximum of air-shower profiles at the Pierre Auger Observatory. II. Composition implications

A. Aab, P. Abreu, M. Aglietta … (2014)

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Author and article information

Journal

Journal ID (iso-abbrev): Phys. Rev. Lett.

Title: Physical review letters

Publisher: American Physical Society (APS)

ISSN (Electronic): 1079-7114

ISSN (Print): 0031-9007

Publication date (Electronic): Nov 04 2016

Volume: 117

Issue: 19

Affiliations

[1 ] Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Germany.

[2 ] Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Portugal.

[3 ] Osservatorio Astrofisico di Torino (INAF), Torino, Italy.

[4 ] INFN, Sezione di Torino, Italy.

[5 ] Fermi National Accelerator Laboratory, Batavia, Illinois, USA.

[6 ] Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, France.

[7 ] Universidade de São Paulo, Inst. de Física, São Paulo, Brazil.

[8 ] Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), Argentina.

[9 ] New York University, New York, New York, USA.

[10 ] Ohio State University, Columbus, Ohio, USA.

[11 ] Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Argentina.

[12 ] Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Argentina.

[13 ] Universidad Nacional Autónoma de México, Mexico.

[14 ] Universidad de Santiago de Compostela, Spain.

[15 ] INFN, Sezione di Napoli, Italy.

[16 ] INFN, Sezione di L'Aquila, Italy.

[17 ] Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA.

[18 ] Universidad Complutense de Madrid, Spain.

[19 ] University of Bucharest, Physics Department, Romania.

[20 ] Universidad Industrial de Santander, Colombia.

[21 ] Observatorio Pierre Auger, Argentina.

[22 ] Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Argentina.

[23 ] University Politehnica of Bucharest, Romania.

[24 ] Karlsruhe Institute of Technology, Institut für Experimentelle Kernphysik (IEKP), Germany.

[25 ] Bergische Universität Wuppertal, Department of Physics, Germany, Germany.

[26 ] University of Adelaide, Australia.

[27 ] Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, France.

[28 ] Università Torino, Dipartimento di Fisica, Italy.

[29 ] Max-Planck-Institut für Radioastronomie, Bonn, Germany.

[30 ] Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris 11, CNRS-IN2P3, France.

[31 ] Institute of Physics (FZU) of the Academy of Sciences of the Czech Republic, Czech Republic.

[32 ] Università del Salento, Dipartimento di Matematica e Fisica "E. De Giorgi", Italy.

[33 ] INFN, Sezione di Lecce, Italy.

[34 ] Karlsruhe Institute of Technology, Institut für Kernphysik (IKP), Germany.

[35 ] INFN Laboratori del Gran Sasso, Italy.

[36 ] Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Física, Brazil.

[37 ] Institute of Nuclear Physics PAN, Poland.

[38 ] Colorado State University, Fort Collins, Colorado, USA.

[39 ] "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Romania.

[40 ] RWTH Aachen University, III. Physikalisches Institut A, Germany.

[41 ] Universidad de Granada and C.A.F.P.E., Spain.

[42 ] Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud Universiteit, Nijmegen, Netherlands.

[43 ] Università di Catania, Dipartimento di Fisica e Astronomia, Italy.

[44 ] INFN, Sezione di Catania, Italy.

[45 ] Universidad Autónoma de Chiapas, Mexico.

[46 ] INFN, Sezione di Milano, Italy.

[47 ] Institute of Space Science, Romania.

[48 ] Universidad Michoacana de San Nicolás de Hidalgo, Mexico.

[49 ] Universidade Estadual de Campinas (UNICAMP), Brazil.

[50 ] Michigan Technological University, Houghton, Michigan, USA.

[51 ] Università di Napoli "Federico II", Dipartimento di Fisica, Italy.

[52 ] Pennsylvania State University, University Park, Pennsylvania, USA.

[53 ] Case Western Reserve University, Cleveland, Ohio, USA.

[54 ] University of Chicago, Chicago, Illinois, USA.

[55 ] SUBATECH, École des Mines de Nantes, CNRS-IN2P3, Université de Nantes, France.

[56 ] Station de Radioastronomie de Nançay, France.

[57 ] Università del Salento, Dipartimento di Ingegneria, Italy.

[58 ] Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Argentina.

[59 ] Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos, FCEyN, Universidad de Buenos Aires, Argentina.

[60 ] Universidade Federal Fluminense, Brazil.

[61 ] Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Netherlands.

[62 ] Universidade de São Paulo, Inst. de Física de São Carlos, São Carlos, Brazil.

[63 ] Universidad de Alcalá de Henares, Spain.

[64 ] Università di Roma "Tor Vergata", Dipartimento di Fisica, Italy.

[65 ] INFN, Sezione di Roma "Tor Vergata", Italy.

[66 ] Università dell'Aquila, Dipartimento di Chimica e Fisica, Italy.

[67 ] Universidade Federal do Paraná, Setor Palotina, Brazil.

[68 ] IFLP, Universidad Nacional de La Plata and CONICET, Argentina.

[69 ] Universität Hamburg, II. Institut für Theoretische Physik, Germany.

[70 ] Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, Netherlands.

[71 ] Experimental Particle Physics Department, J. Stefan Institute, Slovenia.

[72 ] Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia.

[73 ] Instituto de Física de Rosario (IFIR)-CONICET/U.N.R. and Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Argentina.

[74 ] Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM) and Universidad Tecnológica Nacional-Facultad Regional Mendoza (CONICET/CNEA), Argentina.

[75 ] Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik (IPE), Germany.

[76 ] University of Łódź, Poland.

[77 ] University of Hawaii, Honolulu, Hawaii, USA.

[78 ] Universidade Estadual de Feira de Santana (UEFS), Brazil.

[79 ] Palacky University, RCPTM, Czech Republic.

[80 ] Colorado School of Mines, Golden, Colorado, USA.

[81 ] Universidade Federal do ABC (UFABC), Brazil.

[82 ] Benemérita Universidad Autónoma de Puebla (BUAP), Mexico.

[83 ] Università di Milano, Dipartimento di Fisica, Italy.

[84 ] Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV), Mexico.

[85 ] Louisiana State University, Baton Rouge, Louisiana, USA.

[86 ] University of New Mexico, Albuquerque, New Mexico, USA.

[87 ] Centro Brasileiro de Pesquisas Fisicas (CBPF), Brazil.

[88 ] KVI-Center for Advanced Radiation Technology, University of Groningen, Netherlands.

[89 ] Universidade Federal de Pelotas, Brazil.

[90 ] University Prague, Institute of Particle and Nuclear Physics, Czech Republic.

[91 ] Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF and CONICET, Argentina.

[92 ] Northeastern University, Boston, Massachusetts, USA.

[93 ] Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN), Mexico.

[94 ] Universidade Federal da Bahia, Brazil.

[95 ] University of Nebraska, Lincoln, Nebraska, USA.

[96 ] INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo, Italy.

[97 ] Universidade de São Paulo, Escola de Engenharia de Lorena, Brazil.

[98 ] School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom.

Article

DOI: 10.1103/PhysRevLett.117.192001

PubMed ID: 27858429

SO-VID: bae553d6-e2b4-4b10-a400-a355a0cbedbd

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

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Most cited references 22

The FLUKA code: description and benchmarking

Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above1017.8 eV

Depth of maximum of air-shower profiles at the Pierre Auger Observatory. II. Composition implications

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Cited by 20