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

2016-10-31Journal article Open access
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dc.contributor.authorPierre Auger collaboration (437 authors)
dc.contributor.authorAbreu, Pedro
dc.contributor.authorAndringa, Sofia
dc.contributor.authorAssis, Pedro
dc.contributor.authorBlanco, Alberto
dc.contributor.authorCazon, Lorenzo
dc.contributor.authorConceição, Ruben
dc.contributor.authorDiogo, Francisco
dc.contributor.authorEspadanal, Joao
dc.contributor.authorLopes, Luis
dc.contributor.authorPimenta, Mário
dc.contributor.authorSantos, Eva
dc.contributor.authorSarmento, Raul
dc.contributor.authorTomé, Bernardo
dc.date.accessioned2019-02-04T11:33:41Z
dc.date.available2019-02-04T11:33:41Z
dc.date.issued2016-10-31
dc.date.updated2019-02-04T11:33:41Z
dc.description.abstractUltrahigh 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.
dc.description.versionPeer Reviewed
dc.identifierPhys.Rev.Lett. 117 (2016) 192001; DOI 10.1103/PhysRevLett.117.192001
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.117.192001
dc.identifier.urihttp://hdl.handle.net/10400.26/27216
dc.language.isoeng
dc.titleTesting Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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