Abstract
The $mu$-from-$u$ supersymmetric standard model ($muu$SSM)offers a solution to the $mu$-problem and simultaneously accommodatemassive neutrinos through $R$-parity violation and a TeV scale seesawusing a set of right-handed neutrino superfields. In this model a verylightneutralino can still decay inside the LHC detector through an availableeven lighter scalar/pseudoscalar state, with light neutralino $ o$ lighterscalar/pseudoscalar + neutrino decay mode. We emphasize how thisunique feature can be utilized to study a non-standard Higgs signal at theLHC,with Higgs $ o$ a pair of light neutralino decay mode.We demonstrate how $muu$SSM can manifest itself through events withdisplaced multileptons at the LHC and provides unique signature for themodel.
24-08-2026