R-Hadron and long lived particle searches at the LHC

Details R-Hadron and long lived particle searches at the LHC R-Hadron and long lived particle searches at the LHC

2007-10-10

arxiv.org/abs/0710.2111v3

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 7 eps figures

Scientific paper

If long lived charged particles exist, and produced at the LHC, they may travel with velocity significantly slower than the speed of light. This unique signature was not considered during the design of the LHC experiments, ATLAS and CMS. As a result, hardware and trigger capabilities need to be evaluated. Model independent approaches for finding long lived particles with the LHC experiments are introduced. They are tested using two bench marks, one in GMSB and one in Split SUSY. The focus is on hardware and trigger issues, as well as reconstruction methods developed by ATLAS and CMS. Both experiments suggest time of flight (TOF) based methods. However, the implementation is different. In ATLAS a first beta estimation is done already at the trigger level. CMS also uses dE/dx to estimate beta.

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