Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-03-16
JHEP 1105:078,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
37 pages, 20 figures, 1 table
Scientific paper
Anomaly mediation is a popular and well motivated supersymmetry breaking scenario. Different possible detailed realisations of this set-up are studied and actively searched for at colliders. Apart from limits coming from flavour, low energy physics and direct collider searches, these models are usually constrained by the requirement of reproducing the observations on dark matter density in the universe. We reanalyse these bounds and in particular we focus on the dark matter bounds both considering the standard cosmological model and alternative cosmological scenarios. These scenarios do not change the observable cosmology but relic dark matter density bounds strongly depend on them. We consider few benchmark points excluded by standard cosmology dark matter bounds and suggest that loosening the dark matter constraints is necessary in order to avoid a too strong (cosmological) model dependence in the limits that are obtained for these models. We also discuss briefly the implications for phenomenology and in particular at the Large Hadron Collider.
Arbey Alexandre
Deandrea Aldo
Tarhini Ahmad
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