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arXiv · 1403.3612

Fragmentation contributions to J/psi production at the Tevatron and the LHC

Geoffrey T. Bodwin·Hee Sok Chung·U-Rae Kim·Jungil Lee
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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 $p_T$.

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Geoffrey T. Bodwin, Hee Sok Chung, U-Rae Kim, Jungil Lee. 2014-07-09. Fragmentation contributions to J/psi production at the Tevatron and the LHC. https://doi.org/10.1103/physrevlett.113.022001

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