Large Higgs Boson Exchange Contribution in Three-Body Neutralino Decays
Abstract
We show that the Higgs boson exchange contribution can be large in three-body decays of neutralinos even in the case of small tan(beta). This enlarges the branching ratios for the decays neutralino2 -> neutralino1 b b and neutralino2 -> neutralino1 tau- tau+. This is the case in the region of the parameter space where the two lightest neutralinos are gaugino-like, the sfermions are heavier than 300 GeV, and mA0 = 200 GeV or smaller.
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