Abstract
We further discuss possible sgoldstino interpretation of the observation, reported by the HyperCP collaboration, of three Σ+ → pμ+μ− decay events with the dimuon invariant mass 214.3 MeV within the detector resolution. With a sgoldstino mass equal to 214.3 MeV, this interpretation can be verified at existing and future B and ϕ factories. We find that the most natural values of the branching ratios of two-body B and D meson decays to sgoldstino P and vector meson V are about 10−6−10−7. The branching ratios of ϕ meson decay ϕ → Pγ are estimated to be in the range 1.8 × 10−13−1.6 × 10−7, depending on the hierarchy of supersymmetry-breaking soft terms. Similar branching ratios for ρ and ω mesons are in the range 10−14−3.4 × 10−7.
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