TY - T1 - First measurement of quarkonium polarization in nuclear collisions at the LHC SN - / UR - http://hdl.handle.net/10138/330766 T3 - A1 - The ALICE collaboration; Acharya, S.; Adamova, D.; Kim, D. J.; Krizek, F.; Parkkila, J. E.; Rak, J.; Rytkönen, Heidi Maria; Räsänen, Sami; Saarimäki, Oskari Antti Matti; Slupecki, M.; Trzaska, W. H.; Zhou, Zhipeng A2 - PB - Y1 - 2021 LA - eng AB - The polarization of inclusive J/psi and Upsilon(1S) produced in Pb-Pb collisions at root s(NN) = 5.02 TeV at the LHC is measured with the ALICE detector. The study is carried out by reconstructing the quarkonium through its decay to muon pairs in the rapidity region 2.5 < y < 4 and measuring the polar and azimuthal angular distributions of the muons. The polarization parameters lambda(theta), lambda(phi) and lambda(theta phi) are measured in the helicity and Collins-Soper reference frames, in th... VO - IS - SP - OP - KW - 114 Physical sciences; P(P)OVER-BAR COLLISIONS; J/PSI PRODUCTION; PP COLLISIONS; SUPPRESSION; RAPIDITY; MATTER N1 - PP - ER -