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arXiv · 1509.05907

QCD factorization for high $p_T$ heavy quarkonium production

Yan-Qing Ma·Jian-Wei Qiu·George Sterman·Hong Zhang
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Abstract

In this talk, we present the QCD factorization formula for heavy quarkonium production at large $p_T$ with factorized leading-power and next-to-leading power contributions in the $1/p_T$ expansion. We show that the leading order analytical calculations in this QCD factorization approach can reproduce effectively the full next-to-leading order numerical results derived using non-relativistic QCD (NRQCD) factorization formalism. We demonstrate that the next-to-leading power contributions are crucial to the description of the channels that are the most relevant for the rate as well as polarization of $J/\psi$ production at current collider energies.

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Yan-Qing Ma, Jian-Wei Qiu, George Sterman, Hong Zhang. 2015-09-19. QCD factorization for high $p_T$ heavy quarkonium production. https://arxiv.org/abs/1509.05907

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