Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-06-24
Phys.Rev.D76:055007,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 +1 pages. 6 figures
Scientific paper
10.1103/PhysRevD.76.055007
Long lived gluinos are the trademark of split supersymmetry. They form R-hadrons that, when charged, efficiently lose energy in matter via ionisation. Independent of R-spectroscopy and initial hadronization, a fraction of R-hadrons become charged while traversing a detector. This results in a large number of stopped gluinos at present and future detectors. For a 300 GeV gluino, $10^6$ will stop each year in LHC detectors, while several hundred stop in detectors during Run II at the Tevatron. The subsequent decays of stopped gluinos produce distinctive depositions of energy in calorimeters with no activity in either the tracker or the muon chamber. The gluino lifetime can be determined by looking for events where both gluinos stop and subsequently decay.
Arvanitaki Asimina
Dimopoulos Savas
Pierce Aaron
Rajendran Surjeet
Wacker Jay
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