Baringer, Philip S.Bean, AliceBenelli, GabrieleKenny, R. P., IIIMurray, Michael J.Noonan, DannySanders, Stephen J.Stringer, Robert W.Tinti, GemmaWood, Jeffrey ScottChatrchyan, S.Khachatryan, V.Sirunyan, A. M.Tumasyan, A.Adam, W.Aguilo, E.Bergauer, T.Dragicevic, M.2014-11-122014-11-122013-02-20S. Chatrchyan et al. (CMS Collaboration). (2013). "Measurement of the Υ(1S), Υ(2S), and Υ(3S) Polarizations in pp Collisions at s√=7  TeV." Physical Review Letters, 110(8):081802. http://dx.doi.org/10.1103/PhysRevLett.110.081802.0031-9007https://hdl.handle.net/1808/15716This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.081802.The polarizations of the Υ(1S), Υ(2S), and Υ(3S) mesons are measured in proton-proton collisions at s√=7  TeV, using a data sample of Υ(nS)→μ(+)μ(−) decays collected by the CMS experiment, corresponding to an integrated luminosity of 4.9  fb(−1). The dimuon decay angular distributions are analyzed in three different polarization frames. The polarization parameters λ(ϑ), λ(φ), and λ(ϑφ), as well as the frame-invariant quantity λ˜, are presented as a function of the Υ(nS) transverse momentum between 10 and 50 GeV, in the rapidity ranges |y|<0.6 and 0.6<|y|<1.2. No evidence of large transverse or longitudinal polarizations is seen in the explored kinematic region.Article10.1103/PhysRevLett.110.081802https://orcid.org/0000-0002-3932-3769openAccess