“School of Particles”
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| Paper IPM / Particles / 11710 |
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| Abstract: | |||||||||||||||||||||||||
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The result of a search at the LHC for heavy stable charged particles produced in pp
collisions at
p
sqrt(s) = 7 TeV is described. The data sample was collected with the CMS
detector and corresponds to an integrated luminosity of 3.1 pb
1
. Momentum and
ionization-energy-loss measurements in the inner tracker detector are used to identify tracks compatiblewith heavy slow-moving particles. Additionally, tracks passing
muon identification requirements are also analyzed for the same signature. In each
case, no candidate passes the selection, with an expected background of less than
0.1 events. A lower limit at the 95is set at 398 GeV/c
2
, using a conventional model of nuclear interactions that allows
charged hadrons containing this particle to reach the muon detectors. A lower limit
of 311 GeV/c
2
is also set for a stable gluino in a conservative scenario of complete
charge suppression, where any hadron containing this particle becomes neutral before reaching the muon detectors.
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