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arXiv · 1009.3655

J/psi (psi') production at the Tevatron and LHC at O(α_s^4v^4) in nonrelativistic QCD

Yan-Qing Ma·Kai Wang·Kuang-Ta Chao
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Abstract

We present a complete evaluation for $\jpsi(\psip)$ 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 $\pj$ 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 $\jpsi$ production at the LHC, which agrees with the CMS data. The possibility of $\sa$ dominance and the $\jpsi$ polarization puzzle are also discussed.

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Yan-Qing Ma, Kai Wang, Kuang-Ta Chao. 2011-01-27. J/psi (psi') production at the Tevatron and LHC at O(α_s^4v^4) in nonrelativistic QCD. https://doi.org/10.1103/physrevlett.106.042002

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