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QCD factorization for hadronic quarkonium production at high $p_T$

by Kyle Lee, Jian-Wei Qiu, George Sterman, Kazuhiro Watanabe

Submission summary

As Contributors: Kazuhiro Watanabe
Preprint link: scipost_202107_00104v1
Date submitted: 2021-07-31 19:27
Submitted by: Watanabe, Kazuhiro
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
  • High-Energy Physics - Phenomenology
  • Nuclear Physics - Theory
Approaches: Theoretical, Phenomenological


Heavy quarkonium production at high transverse momentum ($p_T$) in hadronic collisions is explored in the QCD factorization approach. We find that the leading power in the $1/p_T$ expansion is responsible for high $p_T$ regime, while the next-to-leading power contribution is necessary for the low $p_T$ region. We present the first numerical analysis of the scale evolution of coupled twist-2 and twist-4 fragmentation functions (FFs) for heavy quarkonium production and demonstrate that the QCD factorization approach is capable of describing the $p_T$ spectrum of hadronic $J/\psi$ production at the LHC.

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Submission scipost_202107_00104v1 on 31 July 2021

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