MIT Libraries homeMIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Measurement of the Υ(1S), Υ(2S), and Υ(3S) Polarizations in pp Collisions at √s=7  TeV

Author(s)
Apyan, Aram; Bauer, Gerry P.; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Dutta, V.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Kim, Y.; Klute, Markus; Krajczar, Krisztian F.; Levin, A.; Luckey, P. David, Jr.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E.; Roland, Gunther M.; Rudolph, M.; Stephans, George S. F.; Stockli, Fabian; Sumorok, Konstanty C.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, R.; Wyslouch, Boleslaw; Yang, M.; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Zhukova, Victoria; ... Show more Show less
Thumbnail
DownloadChatrchyan-2013-Measurement of the Upsilon.pdf (406.5Kb)
PUBLISHER_CC

Publisher with Creative Commons License

Creative Commons Attribution

Terms of use
Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/
Metadata
Show full item record
Abstract
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[superscript +]μ[superscript -] decays collected by the CMS experiment, corresponding to an integrated luminosity of 4.9  fb[superscript -1]. The dimuon decay angular distributions are analyzed in three different polarization frames. The polarization parameters λ[subscript ϑ], λ[subscript φ], and λ[subscript 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.
Date issued
2013-02
URI
http://hdl.handle.net/1721.1/78626
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, et al. Measurement of the Υ(1S), Υ(2S), and Υ(3S) Polarizations in Pp Collisions at Sqrt[s]=7  TeV. Physical Review Letters 110(8), 2013. © 2013 CERN, for the CMS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries homeMIT Libraries logo

Find us on

Twitter Facebook Instagram YouTube RSS

MIT Libraries navigation

SearchHours & locationsBorrow & requestResearch supportAbout us
PrivacyPermissionsAccessibility
MIT
Massachusetts Institute of Technology
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.