Measurement of $\ddot{I}ˆ(2S)$ to $J/\ddot{I}ˆ$ cross-section ratio as function of multiplicity in $p$Pb collisions at$\sqrt{s_{NN}}=8.16$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1139

The production ratio of $\ddot{I}ˆ(2S)$ to $J/\ddot{I}ˆ$ charmonium states is presented as a function of multiplicity in proton-lead collisions at a centre-of-mass energy of $\sqrt{s_{NN}}=8.16$…