13–17 sept. 2021
São José dos Campos, Brazil
Fuseau horaire America/Sao_Paulo

DPS mechanism for associated $c\bar c l^+l^-$ production in $AA$ UPCs as a probe for photon density inside the nucleus

15 sept. 2021, 16:00
1m
São José dos Campos, Brazil

São José dos Campos, Brazil

Instituto Tecnológico de Aeronáutica
Poster Poster

Orateur

Mme Bruna de Oliveira Stahlhoffer (UFSC)

Description

We discuss the associated $c\bar{c}$ and $l^+l^-$ pairs production in ultraperipheral heavy-ion collisions at high energies. Such a channel provides a novel probe for double-parton scattering (DPS) at small $x$ enabling one to probe the photon density inside the nucleus. We have derived an analog of the standard central $pp$ pocket formula and studied the kinematical dependence of the effective cross section. Taking into account both elastic and non-elastic contributions, we have shown predictions for the DPS $c\bar c l^+l^-$ production cross section differential in charm quark rapidity and dilepton invariant mass and rapidity for LHC and a future collider.

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