Soft particle production in very high energy hadron interactions

0501973 - FZÚ 2019 RIV NL eng J - Článek v odborném periodiku
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
Grant CEP: GA MŠMT LG15014; GA MŠMT(CZ) LG13007
Institucionální podpora: RVO:68378271
Klíčová slova: extensive air showers * muon bundles * ultra-high energy * cosmic rays * soft particles * Monte-Carlo simulations
Obor OECD: Particles and field physics
Impakt faktor: 3.203, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0293941