# QCD factorization for hadronic quarkonium production at high $p_T$

### 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 Specialties: High-Energy Physics - Phenomenology Nuclear Physics - Theory Approaches: Theoretical, Phenomenological

### Abstract

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.

###### Current status:
Editor-in-charge assigned