Constraining gluon nPDFs with open heavy-flavor production in ultraperipheral heavy ion collisions with CMS

5 May 2026, 11:35
20m
Sala SATURNO A, First Floor (Hotel Carlton)

Sala SATURNO A, First Floor

Hotel Carlton

Talk WG2 Small-x, Diffraction and Vector Mesons WG2 Small-x, diffraction and vector mesons

Speaker

Balasz Kovacs (MIT)

Description

Open heavy-flavor production in ultraperipheral collisions (UPCs) enables the study of cold nuclear matter over a wide range of momentum transfers $Q$ and parton momentum fractions $x$, without significant final-state effects. In this talk we present the final results for the first measurement of $\mathrm{D}^0$ photoproduction in heavy-ion UPCs using data collected by the CMS experiment during 2023 PbPb collisions at the LHC. The measured production cross sections are shown as a function of the $\mathrm{D}^0$ transverse momentum, $2\lt p_{T}\lt12$ GeV/c and rapidity, $\eta \lt$ -2.

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