QCD factorization for hadronic quarkonium production at high $p_T$

Submission summary

 Authors (as Contributors): Kazuhiro Watanabe
Submission information
Date accepted: 2022-03-09
Date submitted: 2021-07-31 19:27
Submitted by: Watanabe, Kazuhiro
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Ontological classification
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.

Published as SciPost Phys. Proc. 8, 143 (2022)

Submission & Refereeing History

Submission scipost_202107_00104v1 on 31 July 2021

Reports on this Submission

Anonymous Report 1 on 2022-2-27 (Invited Report)

• Cite as: Anonymous, Report on arXiv:scipost_202107_00104v1, delivered 2022-02-27, doi: 10.21468/SciPost.Report.4541

Report

QCD factorization using leading power (LP) and next-to-leading power (NLP) approach for hadronic J/ψ production at the LHC is carried our. The production at high transverse momentum (pT ) in hadronic collisions is explored in this QCD factorization approach. It has been demonstrated that the LP contributions dominate the high pT region, while the NLP contributions are sizable at lower pT and necessary for describing the LHC data. The paper is very well written and I recommend this work for publication.

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