Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-05-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 15 figures
Scientific paper
We examine the extent to which it is possible to realize the NMSSM "ideal Higgs" models espoused in several papers by Gunion et al in the context of partially universal GUT scale boundary conditions. To this end we use the powerful methodology of nested sampling. We pay particular attention to whether ideal-Higgs-like points not only pass LEP constraints but are also acceptable in terms of the numerous constraints now available, including those from the Tevatron and $B$-factory data, $(g-2)_\mu$ and the relic density $\Omega h^2$. In general for this particular methodology and range of parameters chosen, very few points corresponding to said previous studies were found, and those that were found were at best $2\sigma$ away from the preferred relic density value. Instead, there exist a class of points, which combine a mostly singlet-like Higgs with a mostly singlino-like neutralino coannihilating with the lightest stau, that are able to effectively pass all implemented constraints in the region $80
Gunion John F.
Lopez-Fogliani Daniel E.
Roszkowski Leszek
Ruiz de Austri Roberto
Varley Tom A.
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