https://doi.org/10.1140/epjc/s10052-009-1040-0
Regular Article - Experimental Physics
Trigger and reconstruction for heavy long-lived charged particles with the ATLAS detector
1
Faculty of Physics, Technion, Israel Institute of Technology, Haifa, 32000, Israel
2
Department of Physics, University of Tokyo, Tokyo, 113-0033, Japan
3
Department of Physics, Michigan State University, East Lansing, MI, 48824, USA
* e-mail: shlomit.tarem@cern.ch
Received:
18
June
2008
Revised:
2
March
2009
Published online:
14
May
2009
Long lived charged particles are predicted by many models of physics beyond the standard model (SM). The common signature of such models is a heavy long-lived charged particle with velocity smaller than the speed of light, β<1. This unique signature makes the search for it model independent. This paper presents methods we developed as part of the ATLAS trigger and reconstruction chain for identifying slow particles and measuring their mass. The efficacy of these methods is demonstrated using two models that are different in every aspect except for the existence of long lived charged particles; a GMSB model that includes sleptons with a mass of 100 GeV, and R-Hadrons with a mass of 300 GeV produced in a split SUSY model.
© Springer-Verlag , 2009
