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Bodwin, Hee Sok Chung, Jungil Lee, Kuang-Ta Chao, U-Rae Kim, Yan-Qing Ma","submitted_at":"2015-09-25T21:43:33Z","abstract_excerpt":"We compute fragmentation corrections to hadroproduction of the quarkonium states $J/\\psi$, $\\chi_{cJ}$, and $\\psi(2S)$ at leading power in $m_c^2/p_T^2$, where $m_c$ is the charm-quark mass and $p_T$ is the quarkonium transverse momentum. The computation is carried out in the framework of nonrelativistic QCD. We include corrections to the parton-production cross sections through next-to-leading order in the strong coupling $\\alpha_s$ and corrections to the fragmentation functions through second order in $\\alpha_s$. 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