Measurement of the $\Upsilon$ polarizations in $pp$ collisions at $\sqrt{s}$=7 and 8TeV

Peter Clarke, Greig Cowan, Stephan Eisenhardt, Franz Muheim, Matthew Needham, Stephen Playfer, LHCb Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies $ \sqrt{s}=7 $ and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb$^{−1}$, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum p$_{T}^{Υ}$  
Original languageEnglish
Article numberAaij:2017egv
Pages (from-to)110
Journal Journal of High Energy Physics
Publication statusPublished - 20 Dec 2017


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