Double quarkonium hadroproduction as a probe of gluon Sivers function

2019/06/12 by Xuan Luo, Hao Sun, Luo, Xuan +2
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.1906.04883

arxiv created 2019/06/12 · openalex publication_date 2019/06/12 · arxiv updated 2019/06/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The prediction of single spin asymmetry (SSA) in double \rm J/ψ production in proton-proton collision is given out within the framework of non-relativistic QCD, using the recently obtained best fit parameters for the gluon Sivers function extracted from PHENIX data in \rm p+p^\uparrow→π⁰+X. The color singlet state \rm ³ S₁⁽¹⁾ and color octet state \rm ³ S₁⁽⁸⁾ are considered to the SSA contribution in the double \rm J/ψ hadroproduction. Our result shows that a sizable asymmetry can be estimated as functions of different kinematic variables.

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