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.
A Supersymmetric Resolution of the KARMEN Anomaly
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abstract
We consider the hypothesis that the recently reported anomaly in the time structure of signals in the KARMEN experiment is due to the production of a light photino (or Zino) which decays radiatively due to violation of $R$-parity. Such a particle is shown to be consistent with all experimental data and with cosmological nucleosynthesis. There are difficulties with constraints from SN~1987A but these may be evaded if squarks are non-degenerate in mass.
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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.