New physics from ultrahigh energy cosmic rays

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dc.creatorIllana, J. I.
dc.creatorMasip, M.
dc.creatorMeloni, D.
dc.date2006-11-02
dc.date2007-02-09
dc.date.accessioned2026-07-07T11:02:06Z
dc.date.available2026-07-07T11:02:06Z
dc.descriptionCosmic rays from outer space enter the atmosphere with energies of up to 10^{11} GeV. The initial particle or a secondary hadron inside the shower may then interact with an air nucleon to produce nonstandard particles. In this article we study the production of new physics by high energy cosmic rays, focusing on the long-lived gluino of split-SUSY models and a WIMP working as dark matter. We first deduce the total flux of hadron events at any depth in the atmosphere, showing that secondary hadrons can not be neglected. Then we use these results to find the flux of gluinos and WIMPs that reach the ground after being produced inside air showers. We also evaluate the probability of producing these exotic particles in a single proton shower of ultrahigh energy. Finally we discuss the possible signal in current and projected experiments. While the tiny flux of WIMPs does not seem to have any phenomenological consequences, we show that the gluinos could modify substantially the profile of a small fraction of extensive air showers. In particular, they could produce a distinct signal observable at AUGER in showers of large zenith angle.
dc.description9 pages, version to appear in PRD
dc.identifierhttps://arxiv.org/abs/hep-ph/0611036
dc.identifierhttp://arxiv.org/abs/hep-ph/0611036
dc.identifierPhys.Rev.D75:055002,2007
dc.identifierdoi:10.1103/PhysRevD.75.055002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188147
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleNew physics from ultrahigh energy cosmic rays
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