Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider

2008/02/29 by R. Arnowitt, Richard Arnowitt, Bhaskar Dutta +7 · 2 citations
Physics and Astronomy · #Collider #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Hadron #Large Hadron Collider #Neutralino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Supergravity #Supersymmetry #hep-ph

paper · pdf · doi:10.1103/physrevlett.100.231802

published as Phys.Rev.Lett.100:231802,2008 · LaTex file, 4 pages, 5 eps fugures. Final version. Appear in PRL

arxiv created 2008/06/09 · openalex publication_date 2008/06/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We examine the stau-neutralino coannihilation (CA) mechanism of the early Universe. We use the minimal supergravity (mSUGRA) model and show that from measurements at the CERN Large Hadron Collider one can predict the dark matter relic density with an uncertainty of 6% with 30 fb(-1) of data, which is comparable to the direct measurement by the Wilkinson Microwave Anisotropy Probe. This is done by measuring four mSUGRA parameters m(0), m(1/2), A(0), and tanbeta without requiring direct measurements of the top squark and bottom squark masses. We also provide precision measurements of the gaugino, squark, and lighter stau masses in this CA region without assuming gaugino universality.

Citations

• Measurement of SUSY Masses via Cascade Decays for SPS 1a
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Blueprints of the no-scale multiverse at the LHC
• Determination of nonuniversal supergravity models at the Large Hadron Collider