12th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

Top quark pair production in Heavy Ion Collisions with the ATLAS experiment

23 Sept 2024, 14:20

20m

Room 103

Oral presentation 5. Nuclear PDFs, saturation, and early time dynamics Parallel 3: nPDF

Speaker

Patrycja Anna Potepa (AGH University of Krakow (PL))

Description

Measurements of top quarks in heavy-ion collisions are expected to provide novel probes of nuclear modifications to parton distribution functions as well as to bring unique information about the evolution of strongly interacting mat- ter. We report the observation of the top-quark pair production in proton-lead collisions at the centre-of-mass energy of 8.16 TeV in the ATLAS experiment at the LHC. Top-quark pair production is measured in the lepton+jets and the dilepton channels, with a significance well above 5 standard deviations in each channel separately. The results from the measurement of the nuclear modifica- tion factor RpA are also presented. If available, results from the measurement of top-quark production in Pb+Pb collisions will be presented and discussed.

Presentation materials

Potepa-Slides.pdf