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@ARTICLE{Adam:200822,
      author       = {Adam, Jaroslav and others},
      collaboration = {{ALICE Collaboration}},
      title        = {{S}tudy of cosmic ray events with high muon multiplicity
                      using the {ALICE} detector at the {CERN} {L}arge {H}adron
                      {C}ollider},
      journal      = {Journal of cosmology and astroparticle physics},
      volume       = {1601},
      number       = {01},
      issn         = {1475-7516},
      address      = {London},
      publisher    = {IOP},
      reportid     = {GSI-2017-00156},
      pages        = {032 - 032},
      year         = {2016},
      note         = {23 pages, 10 captioned figures, 3 tables, authors from page
                      18, published version, figures at
                      http://aliceinfo.cern.ch/ArtSubmission/node/2419 Content
                      from this work may be used under the terms of the Creative
                      Commons Attribution 3.0 License. Any further distribution of
                      this work must maintain attribution to the author(s) and the
                      title of the work, journal citation and DOI.},
      abstract     = {ALICE is one of four large experiments at the CERN Large
                      Hadron Collider near Geneva, specially designed to study
                      particle production in ultra-relativistic heavy-ion
                      collisions. Located 52 meters underground with 28 meters of
                      overburden rock, it has also been used to detect muons
                      produced by cosmic ray interactions in the upper atmosphere.
                      In this paper, we present the multiplicity distribution of
                      these atmospheric muons and its comparison with Monte Carlo
                      simulations. This analysis exploits the large size and
                      excellent tracking capability of the ALICE Time Projection
                      Chamber. A special emphasis is given to the study of high
                      multiplicity events containing more than 100 reconstructed
                      muons and corresponding to a muon areal density
                      ρ(μ) > 5.9 m(−)(2). Similar events have been studied
                      in previous underground experiments such as ALEPH and DELPHI
                      at LEP. While these experiments were able to reproduce the
                      measured muon multiplicity distribution with Monte Carlo
                      simulations at low and intermediate multiplicities, their
                      simulations failed to describe the frequency of the highest
                      multiplicity events. In this work we show that the high
                      multiplicity events observed in ALICE stem from primary
                      cosmic rays with energies above 10(16) eV and that the
                      frequency of these events can be successfully described by
                      assuming a heavy mass composition of primary cosmic rays in
                      this energy range. The development of the resulting air
                      showers was simulated using the latest version of QGSJET to
                      model hadronic interactions. This observation places
                      significant constraints on alternative, more exotic,
                      production mechanisms for these events.},
      keywords     = {muon: multiplicity (INSPIRE) / multiplicity: high (INSPIRE)
                      / cosmic radiation: primary (INSPIRE) / muon: atmosphere
                      (INSPIRE) / cosmic radiation: interaction (INSPIRE) /
                      showers: atmosphere (INSPIRE) / hadron hadron: interaction
                      (INSPIRE) / ALICE: performance (INSPIRE) / CERN LHC Coll
                      (INSPIRE) / numerical calculations: Monte Carlo (INSPIRE) /
                      CERN Lab (INSPIRE) / time projection chamber (INSPIRE) /
                      CERN LEP Stor (INSPIRE) / heavy ion (INSPIRE) / density
                      (INSPIRE) / DELPHI (INSPIRE) / ALEPH (INSPIRE) / detector:
                      efficiency (INSPIRE)},
      cin          = {ALI / DTL / CIT},
      ddc          = {530},
      cid          = {I:(DE-Ds200)ALI-20080822OR105 /
                      I:(DE-Ds200)DTL-20051214OR031 /
                      I:(DE-Ds200)CIT-20110310OR121},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF3-612) / EMMI -
                      Helmholtz-Allianz 'Kosmische Materie im Labor', Extreme
                      Matter Institute (HGF-IVF-HA-216) / HGF-IVF-VH-GS-201 -
                      HGS-HIRe : (HGF-IVF-VH-GS-201) / SUC-GSI-Heidelberg -
                      Strategic university cooperation GSI-U Heidelberg
                      (SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
                      cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
                      SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
                      Darmstadt (SUC-GSI-DA)},
      pid          = {G:(DE-HGF)POF3-612 / G:(DE-Ds200)HGF-IVF-HA-216 /
                      G:(DE-Ds200)HGF-IVF-VH-GS-201 / G:(DE-Ds200)SUC-GSI-HE /
                      G:(DE-Ds200)SUC-GSI-FR / G:(DE-Ds200)SUC-GSI-DA},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {1507.07577},
      howpublished = {arXiv:1507.07577},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1507.07577;\%\%$},
      UT           = {WOS:000369734300032},
      doi          = {10.1088/1475-7516/2016/01/032},
      url          = {https://repository.gsi.de/record/200822},
}