Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s = 13 $$ \sqrt{s}=13 $$ TeV

Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s = 13 $$ \sqrt{s}=13 $$ TeV