Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/102851
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Type: | Journal article |
Title: | Testing hadronic interactions at ultrahigh energies with air showers measured by the Pierre Auger Observatory |
Author: | Aab, A. Abreu, P. Aglietta, M. Ahn, E.J. Al Samarai, I. Albuquerque, I.F.M. Allekotte, I. Allen, J.D. Allison, P. Almela, A. Alvarez Castillo, J. Alvarez-Muñiz, J. Ambrosio, M. Anastasi, G.A. Anchordoqui, L. Andrada, B. Andringa, S. Aramo, C. Arqueros, F. Arsene, N. et al. |
Citation: | Physical Review Letters, 2016; 117(19):192001-1-192001-9 |
Publisher: | American Physical Society |
Issue Date: | 2016 |
ISSN: | 0031-9007 1079-7114 |
Statement of Responsibility: | A. Aab ... J. A. Bellido ... S. G. Blaess ... R.W. Clay ... M. J. Cooper ... B. R. Dawson ... T. D. Grubb ... T. A. Harrison ... G. C. Hill ... M. Malacari ... P. H. Nguyen ... S. J. Saffi ... J. Sorokin ... T. Sudholz ... P. van Bodegom ... et al. (Pierre Auger Collaboration) |
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. |
Keywords: | Pierre Auger Collaboration |
Description: | Published 31 October 2016 |
Rights: | © 2016 American Physical Society |
DOI: | 10.1103/PhysRevLett.117.192001 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1103/physrevlett.117.192001 |
Appears in Collections: | Aurora harvest 3 IPAS publications |
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hdl_102851.pdf | Published version | 532.09 kB | Adobe PDF | View/Open |
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