Speaker
Ulrich Ellwanger
(University Paris 11)
Description
Light neutralinos/charginos are an attractive scenario in the NMSSM: The relic density of Dark matter is easily in the WMAP/Planck range, bounds from direct detection are easily satisfied, and fine-tuning is alleviated. The most promising search channels at the LHC are three leptons plus MET. (Possible are one lepton + Higgs + MET and/or four leptons + MET.) Scanning the parameter space of the NMSSM consistent with astrophysical bounds one finds that NO region in the M_LSP - M_chargino mass plane is ruled out after the run I, and only a very small region might be tested at the run II. The reasons are the smaller production cross sections and the reduced (mixed) branching fractions into the most promising final states.
Author
Ulrich Ellwanger
(University Paris 11)
