Jason Priem (OurResearch_org) points to a new physics paper (sorry, that’s as much as CMM understands from the title) with 8778 authors
Lead author, at least alphabetically, is Georges Aad from the Centre de Physique des Particules de Marseille.
“Good lord, not the Georges Aad who led the 5100 author list on a 2015 paper on the Higgs Bosun in Physical Review Letters?” you ask (CMM May 20 2015). That’s the one.