Determining the Dark Matter Relic Density in the mSUGRA τ̃-χ̃01 Co-Annhiliation Region at the LHC

Abstract

We examine the stau-neutralino co-annihilation mechanism of the early universe. We use the minimal supergravity (mSUGRA) model and show that from measurements at the LHC one can predict the dark matter relic density with an uncertainty of 6% with 30 fb of data, which is comparable to the direct measurement by WMAP. This is possible by introducing measurements involving b-quark jets to determine the mSUGRA parameters A0 and tan β without direct measurements of the stop and sbottom masses. Our methods provide precision mass measurements of the gauginos, squark, and lighter stau without the mSUGRA assumption.

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Cite this paper

@inproceedings{Arnowitt2008DeterminingTD, title={Determining the Dark Matter Relic Density in the mSUGRA τ̃-χ̃01 Co-Annhiliation Region at the LHC}, author={Richard Arnowitt and Bhaskar Dutta and Alfredo Gurrola and Teruki Kamon and Abram Krislock and David Toback}, year={2008} }