DPS mechanism for associated $$c\bar{c} b\bar{b}$$ cc¯bb¯ production in AA UPCs

• Main Authors: Edgar Huayra, Emmanuel G. de Oliveira, Roman Pasechnik
• Format: Article
• Language: English
• Published: SpringerOpen 2020-08-01
• Series: European Physical Journal C: Particles and Fields
• Online Access: http://link.springer.com/article/10.1140/epjc/s10052-020-8354-3

Abstract We discuss the associated $$c\bar{c}$$ cc¯ and $$b\bar{b}$$ bb¯ quark pairs production in the double-parton scattering (DPS) process in ultraperipheral (UPCs) AA collisions. We derive an analogue of the inclusive DPS pocket formula and the photon-energy dependent effective cross section considering an overlap between the hard SPS scatterings. We provide numerical predictions for the DPS cross sections for the $$c\bar{c}b\bar{b}$$ cc¯bb¯ production process at the typical energies of AA UPCs at the LHC and FCC colliders and also characterize the A dependence of the total UPC DPS cross section.