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

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{sup -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{sub 0}, m{sub 1/2}, A{sub 0}, and tan{beta} 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.

Authors:
; ; ; ; ;  [1]
  1. Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)
Publication Date:
OSTI Identifier:
21134015
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 100; Journal Issue: 23; Other Information: DOI: 10.1103/PhysRevLett.100.231802; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANISOTROPY; ANNIHILATION; CERN LHC; COSMOLOGICAL MODELS; MASS; MICROWAVE RADIATION; NONLUMINOUS MATTER; SUPERGRAVITY; UNIVERSE

Citation Formats

Arnowitt, Richard, Dutta, Bhaskar, Gurrola, Alfredo, Kamon, Teruki, Krislock, Abram, and Toback, David. Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider. United States: N. p., 2008. Web. doi:10.1103/PHYSREVLETT.100.231802.
Arnowitt, Richard, Dutta, Bhaskar, Gurrola, Alfredo, Kamon, Teruki, Krislock, Abram, & Toback, David. Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider. United States. doi:10.1103/PHYSREVLETT.100.231802.
Arnowitt, Richard, Dutta, Bhaskar, Gurrola, Alfredo, Kamon, Teruki, Krislock, Abram, and Toback, David. Fri . "Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider". United States. doi:10.1103/PHYSREVLETT.100.231802.
@article{osti_21134015,
title = {Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider},
author = {Arnowitt, Richard and Dutta, Bhaskar and Gurrola, Alfredo and Kamon, Teruki and Krislock, Abram and Toback, David},
abstractNote = {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{sup -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{sub 0}, m{sub 1/2}, A{sub 0}, and tan{beta} 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.},
doi = {10.1103/PHYSREVLETT.100.231802},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 23,
volume = 100,
place = {United States},
year = {2008},
month = {6}
}