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VOLUME 84 (2006) | ISSUE 9 | PAGE 569
More about sgoldstino interpretation of HyperCP events
PACS: 12.60.Jv, 13.20.-v
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^{-6}\div10^{-7}. The branching ratios of φ-meson decay φ→ Pγ are estimated to be in the range 1.8\cdot 10^{-13} \div 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}\div 3.4\cdot 10^{-7}.