More about sgoldstino interpretation of HyperCP events
S. V. Demidov, D. S. Gorbunov
Abstract
We further discuss possible sgoldstino interpretation of the observation, reported by the HyperCP collaboration, of three Σ+ 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 10-610-7. The branching ratios of ϕ-meson decay ϕ Pγis estimated to be in the range 1.8· 10-13 ÷1.6· 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· 10-7.
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