Dark Matter direct detection in the NMSSM

D. E. LOPEZ -FOGLIANI

Minnesota

Workshop; Dark Side of the Universe 2007; 2007

We analyse the direct detection of neutralino dark matter in the framework of the Next-to-Minimal Supersymmetric Standard Model. Taking into account all the available constraints from LEP and Tevatron, including rare K and B meson decays, and the muon anomalous magnetic moment we carry out a thorough analysis of the parameter space. We compute the neutralino-nucleon cross section and compare the results with the sensitivity of detectors. We also study the relic abundance of neutralinos, comparing with WMAP results. Regions of the parameters space are found where experimental constraint are fulfilled, the lightest neutralino has the correct relic abundance and its detection cross section is within the reach of dark matter detectors. This is possible when the neutralino is either light enough so that some annihilation channels are kinematically forbidden, or has a large singlino component.