“…Current studies have been focusing on the Higgs decays into a pair of twin glueballs [331,332,328,333], but this is only a subclass of the generic Higgs decays into these final states. This dark shower channel is also motivated by the class of models with large number of light scalars [334], e.g., NNaturalness [335], EW scale as a trigger [336], and delayed or non-restored electroweak symmetry [337,338,339,340]. The phenomenological study of this general class of models is complex, and this is especially true at the LHC due to the challenges of triggers and backgrounds.…”