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arXiv · hep-ph/0610066

More about sgoldstino interpretation of HyperCP events

S. V. Demidov·D. S. Gorbunov
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Abstract

We further discuss possible sgoldstino interpretation of the observation, reported by the HyperCP collaboration, of three Σ^+\to pμ^+μ^- decay events with dimuon invariant mass 214.3 MeV within detector resolution. With 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}\div10^{-7}. The branching ratios of ϕ-meson decay ϕ\to Pγis estimated to be in the range 1.8\cdot 10^{-13} ÷1.6\cdot 10^{-7}, depending on the hierarchy of supersymmetry breaking soft terms. Similar branchings for ρ- and ω-mesons are in the range 10^{-14}÷3.4\cdot 10^{-7}.

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S. V. Demidov, D. S. Gorbunov. 2006-10-05. More about sgoldstino interpretation of HyperCP events. https://doi.org/10.1134/s0021364006210028

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