Measurement of ψ (2S) production as a function of charged-particle pseudorapidity density in pp collisions at √s = 13 TeV and p–Pb collisions at √sNN = 8.16 TeV with ALICE at the LHC

by Friederike Bock, Nicolas V Schmidt, Kenneth F Read Jr, Florian Jonas, Norbert Novitzky, Constantinos A Loizides, Joachim J Schambach, Martin Poghosyan, Markus Fasel, Ewa Glimos