# Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV

The LHCb Collaboration

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

14 Цитирования (Scopus)

## Аннотация

The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies 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 pT Υ < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.

Язык оригинала английский 110 60 Journal of High Energy Physics 2017 12 https://doi.org/10.1007/JHEP12(2017)110 Опубликовано - 1 дек 2017