Howard Baer et al JHEP02(2004)007 doi:10.1088/1126-6708/2004/02/007
Linear collider capabilities for supersymmetry in dark matter allowed regions of the mSUGRA model
Howard Baer1, Alexander Belyaev1, Tadas Krupovnickas1 and Xerxes Tata2
Show affiliationsRecent comparisons of minimal supergravity (mSUGRA) model predictions with WMAP measurements of the neutralino relic density point to preferred regions of model parameter space. We investigate the reach of linear colliders (LC) with (s)1/2 = 0.5 and 1 TeV for SUSY in the framework of the mSUGRA model. We find that LCs can cover the entire stau co-annihilation region provided tanβ
30. In the hyperbolic branch/focus point (HB/FP) region of parameter space, specialized cuts are suggested to increase the reach in this important ``dark matter allowed'' area. In the case of the HB/FP region, the reach of a LC extends well past the reach of the CERN LHC. We examine a case study in the HB/FP region, and show that the MSSM parameters μ and M2 can be sufficiently well-measured to demonstrate that one would indeed be in the HB/FP region, where the lightest chargino and neutralino have a substantial higgsino component.
- Keywords
- PACS
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12.60.Jv Supersymmetric models
95.35.+d Dark matter (stellar, interstellar, galactic, and cosmological)
- Subjects
- Dates
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Issue 02 (February 2004)
Received 2 December 2003, accepted for publication 3 February 2004
Published 11 February 2004
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Linear collider capabilities for supersymmetry in dark matter allowed regions of the mSUGRA model
Howard Baer et al JHEP02(2004)007
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