Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-05-24
Phys.Rev.D82:055008,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 2 figures, comments: replaced with the journal version
Scientific paper
10.1103/PhysRevD.82.055008
Dark matter (DM) is currently searched for with a variety of detection strategies. Accelerator searches are particularly promising, but even if Weakly Interacting Massive Particles (WIMPs) are found at the Large Hadron Collider (LHC), it will be difficult to prove that they constitute the bulk of the DM in the Universe. We show that a significantly better reconstruction of the DM properties can be obtained with a combined analysis of LHC and direct detection (DD) data, by making a simple Ansatz on the WIMP local density, i.e. by assuming that the local density scales with the cosmological relic abundance. We demonstrate this method in an explicit example in the context of a 24-parameter supersymmetric model, with a neutralino LSP in the stau co-annihilation region. Our results show that future ton-scale DD experiments will allow to break degeneracies in the SUSY parameter space and achieve a significantly better reconstruction of the neutralino composition and its relic density than with LHC data alone.
Bertone Gianfranco
Cerdeno David G.
Fornasa Mattia
Ruiz de Austri Roberto
Trotta Roberto
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