Belle II could detect long-lived bino neutralinos produced in B-meson decays, with a new partial-reconstruction method sensitive to RPV couplings far beyond existing bounds.
The KARMEN anomaly, light neutralinos and type II supernovae
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abstract
The KARMEN experiment observes a time anomaly in events induced by pion decay at rest. This anomaly can be ascribed to the production of a new weakly interacting particle X with mass m_X\sim 34 MeV. We show that a recently proposed identification of the X particle with the lightest neutralino \chi in the frame work of the MSSM with broken R parity is in contradiction to optical observations of type II supernovae.
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Searching for long-lived light neutralinos from $B$-meson decays with baryonic R-parity violation at Belle II
Belle II could detect long-lived bino neutralinos produced in B-meson decays, with a new partial-reconstruction method sensitive to RPV couplings far beyond existing bounds.