Prompt hadroproduction of ηc(1S, 2S) in the kT-factorization approach

Research output: Contribution to journalArticle


In this work, we present a thorough analysis of ηc(1S, 2S) 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*ηc(1S, 2S) vertices are derived. We discuss the importance of taking into account the gluon virtualities. We present the transverse momentum distributions of ηc for several models of the unintegrated gluon distributions. Our calculations are performed for four distinct parameterisations for the cc¯ interaction potential consistent with the meson spectra. We compare our results for ηc(1S) to measurements by the LHCb collaboration and present predictions for ηc(2S) production.


External organisations
  • Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
  • Nuclear Physics Institute of the Academy of Sciences, Czech Republic
  • University of Rzeszów
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics


  • QCD Phenomenology
Original languageEnglish
Article number37
JournalJournal of High Energy Physics
Issue number2
Publication statusPublished - 2020
Publication categoryResearch