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Large Higgs Boson Exchange Contribution in Three-Body Neutralino Decays

A. Bartl·W. Majerotto·W. Porod
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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 neutralino_2 -> neutralino_1 b \bar{b} and neutralino_2 -> neutralino_1 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 m_A0 = 200 GeV or smaller.

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A. Bartl, W. Majerotto, W. Porod. 1999-07-15. Large Higgs Boson Exchange Contribution in Three-Body Neutralino Decays. https://doi.org/10.1016/s0370-2693(99)01042-4

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