Large Higgs Boson Exchange Contribution in Three-Body Neutralino Decays

Details Large Higgs Boson Exchange Contribution in Three-Body Neutralino Decays Large Higgs Boson Exchange Contribution in Three-Body Neutralino Decays

1999-07-15

arxiv.org/abs/hep-ph/9907377v1

Phys.Lett. B465 (1999) 187-192

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 7 figures included as PS-files

Scientific paper

10.1016/S0370-2693(99)01042-4

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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