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arXiv · hep-ph/0610362

Has HyperCP Observed a Light Higgs Boson?

Xiao-Gang He·Jusak Tandean·G. Valencia
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Abstract

The HyperCP collaboration has observed three events for the decay Sigma^+ -> p mu^+ mu^- which may be interpreted as a new particle of mass 214.3 MeV. However, existing data from kaon and B-meson decays severely constrain this interpretation, and it is nontrivial to construct a model consistent with all the data. In this letter we show that the ``HyperCP particle'' can be identified with the light pseudoscalar Higgs boson in the next-to-minimal supersymmetric standard model, the A_1^0. In this model there are regions of parameter space where the A_1^0 can satisfy all the existing constraints from kaon and B-meson decays and mediate Sigma^+ -> p mu^+ mu^- at a level consistent with the HyperCP observation.

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Xiao-Gang He, Jusak Tandean, G. Valencia. 2006-10-27. Has HyperCP Observed a Light Higgs Boson?. https://doi.org/10.1103/physrevlett.98.081802

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