Constraining SUSY Dark Matter with the ATLAS Detector at the LHC

Details Constraining SUSY Dark Matter with the ATLAS Detector at the LHC Constraining SUSY Dark Matter with the ATLAS Detector at the LHC

2004-03-04

arxiv.org/abs/hep-ph/0403047v2

JHEP 0405:071,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 10 encapsulated postscript figures. Minor modification to refs

Scientific paper

10.1088/1126-6708/2004/05/071

In the event that R-Parity conserving supersymmetry (SUSY) is discovered at the LHC, a key issue which will need to be addressed will be the consistency of that signal with astrophysical and non-accelerator constraints on SUSY Dark Matter. This issue is studied for the SPS1a mSUGRA benchmark model by using measurements of end-points and thresholds in the invariant mass spectra of various combinations of leptons and jets in ATLAS to constrain the model parameters. These constraints are then used to assess the statistical accuracy with which quantities such as the Dark Matter relic density and direct detection cross-section can be measured. Systematic effects arising from the use of different mSUGRA RGE codes are also estimated. Results indicate that for SPS1a a statistical(systematic) precision on the relic abundance ~ 2.8% (3 %) can be obtained given 300 fb-1 of data.

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