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Soft particle production in very high energy hadron interactions

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    0501973 - FZÚ 2019 RIV NL eng J - Journal Article
    Ebr, Jan - Nečesal, Petr - Řídký, Jan
    Soft particle production in very high energy hadron interactions.
    Astroparticle Physics. Roč. 90, Apr. (2017), s. 37-49. ISSN 0927-6505. E-ISSN 1873-2852
    R&D Projects: GA MŠMT LG15014; GA MŠMT(CZ) LG13007
    Institutional support: RVO:68378271
    Keywords : extensive air showers * muon bundles * ultra-high energy * cosmic rays * soft particles * Monte-Carlo simulations
    OECD category: Particles and field physics
    Impact factor: 3.203, year: 2017

    Indications of a discrepancy between simulations and data on the number of muons in cosmic ray (CR) showers exist over a large span of energies. We focus in particular on the excess of multi-muon bundles observed by the DELPHI detector at LEP and on the excess in the muon number in general reported by the Pierre Auger Observatory. Even though the primary CR energies relevant for these experiments differ by orders of magnitude, we can find a single mechanism which can simultaneously increase predicted muon counts for both, while not violating constraints from accelerators or from the longitudinal shower development as observed by the Pierre Auger Observatory. We present a brief motivation and describe a practical implementation of such a model, based on the addition of soft particles to interactions above a chosen energy threshold. Results of an extensive set of simulations show the behavior of this model in various parts of a simplified parameter space.
    Permanent Link: http://hdl.handle.net/11104/0293941

     
     
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