Journal article
ϒ(nS) polarizations versus particle multiplicity in pp collisions at √s=7 TeV
Physics letters. B, Vol.761, pp.31-52
08/02/2016
DOI: 10.1016/j.physletb.2016.07.065
Abstract
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 |y|<1.2. The results do not show significant changes from low- to high-multiplicity pp collisions, although large uncertainties preclude definite statements in the ϒ(2S) and ϒ(3S) cases.
Details
- Title: Subtitle
- ϒ(nS) polarizations versus particle multiplicity in pp collisions at √s=7 TeV
- Creators
- C AlbajarM MissiroliD MoránV KhachatryanJ. F TrocónizCMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters. B, Vol.761, pp.31-52
- DOI
- 10.1016/j.physletb.2016.07.065
- ISSN
- 0370-2693
- eISSN
- 1873-2445
- Publisher
- Elsevier B.V
- Grant note
- 246806 / European Commission (ec__________::EC)
- Language
- English
- Date published
- 08/02/2016
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199947002771
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