title: J/ψ(ψ') production at the Tevatron and LHC at O(α(s)4v4) in nonrelativistic QCD.
abstract: We present a complete evaluation for J/ψ(ψ') prompt production at the Tevatron and LHC at next-to-leading order in nonrelativistic QCD, including color-singlet, color-octet, and higher charmonia feeddown contributions. The short-distance coefficients of 3P(J)([8]) at next-to-leading order are found to be larger than leading order by more than an order of magnitude but with a minus sign at high transverse momentum p(T). Two new linear combinations of color-octet matrix elements are obtained from the CDF data, and used to predict J/ψ production at the LHC, which agrees with the CMS data. The possibility of (1)S(0)([8]) dominance and the J/ψ polarization puzzle are also discussed.
authors.affiliation: Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China.
authors.forename: Yan-Qing
authors.initials: YQ
authors.lastname: Ma
authors.forename: Kai
authors.initials: K
authors.lastname: Wang
authors.forename: Kuang-Ta
authors.initials: KT
authors.lastname: Chao