Előadó: Antonio Ortiz (Instituto de Ciencias Nucleares, UNAM)
Az előadás témája: New results on charged particle production as a function of the soft event activity in pp, p-Pb and Pb-Pb collisions at sqrt(sNN) = 5.02 TeV with ALICE
Az előadás időpontja: 2021. szeptember 28., 10 óra
Following the approach of the CDF collaboration, the charged-particle number and summed-pT densities are measured as a function of the leading-particle transverse momentum (ptrigT). These quantities are studied in three topological regions: toward, away and transverse. The toward and away regions contain the jet fragments, whereas the transverse region is the most sensitive to the underlying event. The particle densities are measured in pp and p-Pb collisions at the same nucleon-nuclei center-of-mass energy. Comparisons between particle densities in pp and p-Pb collisions at the same ptrigT will be shown. In addition, the transverse momentum spectra measured in each topological region for pp, p-Pb and Pb-Pb collisions at sqrt(sNN)=5TeV will be presented. The evolution of the pT spectral shapes with multiplicity in the transverse region will be discussed. All measurements are compared with general purpose QCD-inspired MC event generators.