No new elementary particles. These newly discovered particles are composed of multiple quarks and were found (at least up to the measurement precision) with th

No new elementary particles. These newly discovered particles are composed of multiple quarks and were found (at least up to the measurement precision) with the expected rules of how you can combine the elementary particles into composed particles (Baryons in thos case). LHCb actually discovered a bunch of those in the last couple of years. But these are expected from the standard model, just rare and thus not experimentally confirmed before. "Nothing new" for LHC means no new physics. And if these quark states don't happen to be much more frequent or much more rare than predicted, there is no new physics here.