TY - JOUR
T1 - Measurement of the $\Upsilon$ polarizations in $pp$ collisions at $\sqrt{s}$=7 and 8TeV
AU - Clarke, Peter
AU - Cowan, Greig
AU - Eisenhardt, Stephan
AU - Muheim, Franz
AU - Needham, Matthew
AU - Playfer, Stephen
AU - Collaboration, LHCb
PY - 2017/12/20
Y1 - 2017/12/20
N2 - 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$_{T}^{Υ}$
AB - 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$_{T}^{Υ}$
U2 - 10.1007/JHEP12(2017)110
DO - 10.1007/JHEP12(2017)110
M3 - Article
VL - 1712
SP - 110
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
M1 - Aaij:2017egv
ER -