Suppression of excited ${\rm Y}$ states relative to the ground state in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV

CMS Collaboration

The relative yields of ${\rm Y}$ mesons produced in pp and PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV and reconstructed via the dimuon decay channel are measured using data col…