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http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2650| Title: | Hunting long-lived gluinos at the Pierre Auger Observatory |
| Keywords: | Gluinos Hadrons Particle Collision Particle Physics High Energy Physics |
| Description: | A ps version of the paper with high resolution figures is available at: http://www.hep.physics.neu.edu/staff/doqui/rhadron_highres.ps Eventual 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. Peer reviewed |
| URI: | http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2650 |
| Other Identifiers: | arXiv:0710.0525v1 http://hdl.handle.net/10261/2650 |
| Appears in Collections: | Digital Csic |
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