Hunting long-lived gluinos at the Pierre Auger Observatory

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dc.creatorAnchordoqui, Luis A.
dc.creatorDelgado, Antonio
dc.creatorCanal, Carlos A. Garcia
dc.creatorSciutto, Sergio J.
dc.date2007-10-02
dc.date.accessioned2026-07-07T11:37:44Z
dc.date.available2026-07-07T11:37:44Z
dc.descriptionEventual signals of split sypersymmetry in cosmic ray physics are analyzed in detail. The study focusses particularly on quasi-stable colorless R-hadrons originating through confinement of long-lived gluinos (with quarks, anti-quarks, and gluons) produced in pp collisions at astrophysical sources. Because of parton density requirements, the gluino has a momentum which is considerable smaller than the energy of the primary proton, and so production of heavy (mass ~ 500 GeV) R-hadrons requires powerful cosmic ray engines able to accelerate particles up to extreme energies, somewhat above 10^{13.6} GeV. Using a realistic Monte Carlo simulation with the AIRES engine, we study the main characteristics of the air showers triggered when one of these exotic hadrons impinges on a stationary nucleon of the Earth atmosphere. We show that R-hadron air showers present clear differences with respect to those initiated by standard particles. We use this shower characteristics to construct observables which may be used to distinguish long-lived gluinos at the Pierre Auger Observatory.
dc.description13 pages revtex, 9 eps figures. A ps version with high resolution figures is available at http://www.hep.physics.neu.edu/staff/doqui/rhadron_highres.ps
dc.identifierhttps://arxiv.org/abs/0710.0525
dc.identifierhttp://arxiv.org/abs/0710.0525
dc.identifierPhys.Rev.D77:023009,2008
dc.identifierdoi:10.1103/PhysRevD.77.023009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199308
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHunting long-lived gluinos at the Pierre Auger Observatory
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