Observation of triple $J/\psi$ meson production in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The collaboration
CMS-PAS-BPH-21-004, 2021.

Abstract (data abstract)
CERN-LHC-CMS. Observation of triple J/psi meson production in proton-proton collisions at sqrt(s)=13 TeV.

Version 2 modifications: Change in the style of presentation (plots and tables). Results are the same as in the previous version.