Probing double parton scattering via associated open charm and bottom production in ultraperipheral $pA$ collisions

Abstract

In this article, we propose a novel channel for phenomenological studies of the double-parton scattering (DPS) based upon associated production of charm $c\bar{c}$ and bottom $b\bar{b}$ quark pairs in well-separated rapidity intervals in ultra-peripheral high-energy proton-nucleus collisions. This process provides a direct access to the double-gluon distribution in the proton at small-$x$ and enables one to test the factorised DPS pocket formula. We have made the corresponding theoretical predictions for the DPS contribution to this process at typical LHC energies and beyond and we compute the energy-independent (but photon momentum fraction dependent) effective cross section.

arXiv comment15 pages, 7 figs., 1 table. One fig. added. Version accepted for publication at EPJC

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Cited by in corpus (5)

• Double D-meson production in proton-proton and proton-lead collisions at the LHC
• DPS mechanism for associated $c\bar{c}{l}^{+}{l}^{-}$ production in $AA$ UPCs as a probe for photon density inside the nucleus
• Momentum fraction and hard scale dependence of double parton scattering
• Dissociative associated $J/\psi$ and dimuon production in Ap ultraperipheral collisions via double parton scattering
• DPS mechanism for associated $c\bar{c}b\bar{b}$ production in $AA$ UPCs