More about sgoldstino interpretation of HyperCP events

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}.

12 pages, 1 figure

References in corpus (1)

• Driven Pair Contact Process with Diffusion

Cited by in corpus (8)

• Constraining Light Bosons with Radiative ${\rm Y}(1S)$ Decays
• Radiative quarkonium decays and the NMSSM Higgs interpretation of the HyperCP Sigma+ --> p mu+mu- events
• U-boson and the HyperCP exotic events
• Search for decays of neutral beauty mesons into four muons
• Sgoldstino-Higgs mixing in models with low-scale supersymmetry breaking
• Contributions from SUSY-FCNC couplings to the interpretation of the HyperCP events for the decay Σ^+ \to p μ^+ μ^-
• Rare Decays with a Light CP-Odd Higgs Boson in the NMSSM
• Sigma to p mu+ mu-: Standard Model or New Particle?