Article révisé par les pairs
Résumé : The polarizations of the ϒ(1S), ϒ(2S), and ϒ(3S) mesons are measured as a function of the charged particle multiplicity in proton–proton collisions at s=7 TeV. The measurements are performed with a dimuon data sample collected in 2011 by the CMS experiment, corresponding to an integrated luminosity of 4.9 fb−1. The results are extracted from the dimuon decay angular distributions, in two ranges of ϒ(nS) transverse momentum (10–15 and 15–35 GeV), and in the rapidity interval

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DI-fusion

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    par Khachatryan, Vardan , Brun, Hugues , Caillol, Cécile , Clerbaux, Barbara , De Lentdecker, Gilles , Fasanella, Giuseppe , Favart, Laurent , Goldouzian, Reza , Grebenyuk, Anastasia , Karapostoli, Georgia , Lenzi, Thomas , Leonard, Alexandre , Maerschalk, Thierry , Marinov, Audrey , Pernie, Luca , Randle-Conde, Aidan Sean , Seva, Tomislav , Vander Velde, Catherine , Vanlaer, Pascal , Yonamine, Ryo , Zenoni, Florian , Zhang, Fengwangdong , Fang, Wenxing
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    par Khachatryan, Vardan , Brun, Hugues , Barria, Patrizia , Caillol, Cécile , Clerbaux, Barbara , De Lentdecker, Gilles , Fasanella, Giuseppe , Favart, Laurent , Goldouzian, Reza , Grebenyuk, Anastasia , Karapostoli, Georgia , Lenzi, Thomas , Leonard, Alexandre , Maerschalk, Thierry , Marinov, Audrey , Pernie, Luca , Randle-Conde, Aidan Sean , Seva, Tomislav , Vander Velde, Catherine , Vanlaer, Pascal , Yonamine, Ryo , Zenoni, Florian , Zhang, Fengwangdong
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