Exclusive heavy quark-pair production in ultraperipheral collisions

Research output: Contribution to journalArticle


In this article, we study the fully differential observables of the exclusive production of heavy (charm and bottom) quark pairs in high-energy ultraperipheral pA and AA collisions. In these processes, the nucleus A serves as an efficient source of the photon flux, while the QCD interaction of the produced heavy-quark pair with the target (p or A) proceeds via an exchange of gluons in a color singlet state, described by the gluon Wigner distribution. The corresponding predictions for differential cross sections were obtained by using the dipole S matrix in the McLerran-Venugopalan saturation model with impact parameter dependence for the nucleus target, and its recent generalization, for the proton target. Prospects of experimental constraints on the gluon Wigner distribution in this class of reactions are discussed.


External organisations
  • Federal University of Santa Catarina
  • Nuclear Physics Institute of the Academy of Sciences, Czech Republic
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number034016
JournalPhysical Review D
Issue number3
Publication statusPublished - 2019
Publication categoryResearch