The search for the Higgs hasn’t found one yet, and has ruled them out over a wide range of masses:
Does this also mean no other new particles with mass in that range (with 95% certainty)?
No, this only limits the allowed mass of the simplest Standard Model Higgs boson, with its specific production rates and branching ratios (i.e., how often it decays to various things). Other non-Higgs particles as well as non-standard Higgs particles would have different production rates, possibly much smaller, and could decay into more difficult-to-detect final states.
Thanks. The articles are so focused on the Higgs, or occasionally supersymmetry, they don’t go into much detail about what else might still be possible.