Polarization for prompt J/ψ and ψ(2s) production at the Tevatron and LHC.

@article{Gong2013PolarizationFP,
  title={Polarization for prompt J/ψ and ψ(2s) production at the Tevatron and LHC.},
  author={Bin Gong and Lu-Ping Wan and Jian-xiong Wang and Hong-Fei Zhang},
  journal={Physical review letters},
  year={2013},
  volume={110 4},
  pages={042002}
}
With nonrelativistic QCD factorization, we present the first complete next-to-leading order study on the polarization of prompt J/ψ hadroproduction by including feeddown from χ(c)((3)P(J)(1),(3)S(1)(8)) and ψ(2s) which turn out to be very important parts. By using the color-octet long-distance matrix elements obtained from a combined fit of the measurements at the Tevatron and LHC for J/ψ, ψ(2s) and χ(c), the prompt J/ψ polarization predictions are presented, and the results are in agreement… CONTINUE READING