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Measurement of the YnS polarizations in pp collisions as a function of charged particle multiplicity
As a first step in a broad study of QCD medium effects on quarkonium polarization, the polarizations of the $\Upsilon$(1S), $\Upsilon$(2S), and $\Upsilon$(3S) mesons are measured in proton-proton collisions at \mbox{$\sqrt{s} = 7$\,TeV} as a function of the charged particle multiplicity, $N_{\rm ch}...
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2015
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| Acceso en línea: | http://cds.cern.ch/record/2030082 |