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Nuclear modification of Y states in PbPb
Yields of $\Upsilon$(1S), $\Upsilon$(2S) and $\Upsilon$(3S) mesons are measured in the CMS experiment via their $\mu^+ \mu^-$ decays, for bottomonium rapidity $|y|<2.4$, in PbPb and pp collisions at the same energy, $\sqrt{s_{\rm NN}} = 2.76$~TeV. The CMS detector was used to collect integrated l...
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2015
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| Acceso en línea: | http://cds.cern.ch/record/2030083 |