2019/11/08 by Izabela Babiarz, Roman Pasechnik, Wolfgang Schäfer +1 · 1 citation
Physics and Astronomy · #Drell–Yan process #Gluon #High-Energy Particle Collisions Research #Matrix (chemical analysis) #Meson #Momentum (technical analysis) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quarkonium #Rapidity #hep-ph
paper · pdf · doi:10.1007/jhep02(2020)037
17 pages, 12 figures
arxiv created 2019/11/08 · openalex created_date 2019/11/22 · openalex publication_date 2020/02/01 · arxiv updated 2020/03/18 · openalex updated_date 2026/08/05
A bstract In this work, we present a thorough analysis of η c (1 S, 2 S ) quarkonia hadroproduction in k ⊥ -factorisation in the framework of the light-front potential approach for the quarkonium wave function. The off-shell matrix elements for the g * g * η c (1 S, 2 S ) vertices are derived. We discuss the importance of taking into account the gluon virtualities. We present the transverse momentum distributions of η c for several models of the unintegrated gluon distributions. Our calculations are performed for four distinct parameterisations for the cc <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>c</mml:mi> <mml:mover> <mml:mi>c</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> interaction potential consistent with the meson spectra. We compare our results for η c (1 S ) to measurements by the LHCb collaboration and present predictions for η c (2 S ) production.