@article{b29d3cf1714d448eafe430dc656970af,
title = "Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV",
abstract = "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.",
keywords = "Hadron-Hadron scattering (experiments), Particle and resonance production, Polarization, QCD",
author = "{The Lhcb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and S. Blusk and Rudolph, {M. S.} and {Silva Coutinho}, R. and T. Skwarnicki and S. Stone",
note = "Publisher Copyright: {\textcopyright} 2017, The Author(s).",
year = "2017",
month = dec,
day = "1",
doi = "10.1007/JHEP12(2017)110",
language = "English (US)",
volume = "2017",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "12",
}