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Some Signals for a Light Neutralino

Rathin Adhikari·Biswarup Mukhopadhyaya
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Abstract

If a light gaugino sector exists in the supersymmetric standard model then the mass of lightest neutralino may be of the order of 1 GeV or less. As a consequence of neutral flavor violation in supersymmetric theories $B_s$-meson may decay into a pair of lightest neutralinos in such a case. It is found that the parameter space for such light neutralinos can be appreciably constrained by looking for such decays. We also show how a rare B-decays ($B \longrightarrow K(K^{*}) + invisible$ channels) can help us in probing a light neutralino in B-factories in a reasonably model- independent manner. Finally, we observe that that the decay of a tau-lepton into a muon and a pair of light neutralinos can cause a violation of weak universality which is larger in magnitude than that from any source known so far.

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Rathin Adhikari, Biswarup Mukhopadhyaya. 1995-08-07. Some Signals for a Light Neutralino. https://arxiv.org/abs/hep-ph/9508256

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