par Khachatryan, Vardan;Barria, Patrizia
;Brun, Hugues
;Caillol, Cécile
;Clerbaux, Barbara
;De Lentdecker, Gilles
;Fang, Wenxing
;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
; [et al.]
Référence Physics letters. Section B, 761, page (31-52)
Publication Publié, 2016























Référence Physics letters. Section B, 761, page (31-52)
Publication Publié, 2016
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 |