Adıyaman Üniversitesi Kurumsal Arşivi

Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV

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dc.contributor.author CMS Collaboration
dc.date.accessioned 2022-11-14T06:30:39Z
dc.date.available 2022-11-14T06:30:39Z
dc.date.issued 2013
dc.identifier.issn 0370-2693
dc.identifier.uri http://dspace.adiyaman.edu.tr:8080/xmlui/handle/20.500.12414/3851
dc.description.abstract The polarizations of prompt J/psi and psi(2S) mesons are measured in proton-proton collisions at root s = 7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb(-1). The prompt J/psi and psi(2S) polarization parameters lambda, lambda, and lambda, as well as the frame-invariant quantity (lambda) over bar. are measured from the dimuon decay angular distributions in three different polarization frames. The J/psi results are obtained in the transverse momentum range 14 < P-T < 70 GeV, in the rapidity intervals |y| < 0.6 and 0.6 < |y| < 1.2. The corresponding psi(2S) results cover 14 < PT < 50 GeV and include a third rapidity bin, 1.2 < |y| < 1.5. No evidence of large polarizations is seen in these kinematic regions, which extend much beyond those previously explored. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved. tr
dc.language.iso en tr
dc.publisher Elsevier tr
dc.subject CMS tr
dc.subject Physics tr
dc.subject Quarkonium production tr
dc.subject Quarkonium polarization tr
dc.title Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at root s=7 TeV tr
dc.type Article tr
dc.contributor.department Yerevan Phys Inst tr
dc.identifier.endpage 402 tr
dc.identifier.issue 4-5 tr
dc.identifier.startpage 381 tr
dc.identifier.volume 727 tr
dc.source.title Physics Letters B tr


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