Contributions from SUSY-FCNC couplings to the interpretation of the HyperCP events for the decay Σ^+ \to p μ^+ μ^-

Abstract

The observation of three events for the decay ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$ with a dimuon invariant mass of $214.3\pm 0.5$MeV by the HyperCP collaboration imply that a new particle X may be needed to explain the observed dimuon invariant mass distribution. We show that there are regions in the SUSY-FCNC parameter space where the $A_1^0$ in the NMSSM can be used to explain the HyperCP events without contradicting all the existing constraints from the measurements of the kaon decays, and the constraints from the $K^0-{\bar{K}}^0$ mixing are automatically satisfied once the constraints from kaon decays are satisfied.

arXiv comment18 pages, 7 figures

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Cited by in corpus (9)

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• Evidence for the rare decay ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$
• Studying ${\mathcal{B}}_1({\frac{1}{2}}^{+})\to {\mathcal{B}}_2({\frac{1}{2}}^{+}){\ell }^{+}{\ell }^{-}$ Semi-leptonic Weak Baryon Decays with the SU(3) Flavor Symmetry
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