title: Fragmentation contributions to J/ψ production at the Tevatron and the LHC.
abstract: We compute leading-power fragmentation corrections to J/ψ production at the Tevatron and the LHC. We find that, when these corrections are combined with perturbative corrections through next-to-leading order in the strong coupling constant α(s), we obtain a good fit to high-p(T) cross section data from the CDF and CMS Collaborations. The fitted long-distance matrix elements lead to predictions of near-zero J/ψ polarization in the helicity frame at large p(T).
authors: High Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
authors: Geoffrey T
authors: GT
authors: Bodwin
authors: High Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA and Department of Physics, Korea University, Seoul 136-701, Korea.
authors: Hee Sok
authors: HS
authors: Chung
authors: High Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA and Department of Physics, Korea University, Seoul 136-701, Korea.
authors: U-Rae
authors: UR
authors: Kim
authors: High Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA and Department of Physics, Korea University, Seoul 136-701, Korea.
authors: Jungil
authors: J
authors: Lee