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HK: Fachverband Physik der Hadronen und Kerne

HK 36: Heavy-Ion Collisions and QCD Phases VIII

HK 36.4: Vortrag

Mittwoch, 30. März 2022, 15:00–15:15, HK-H2

Charged-particle p_T spectra as a function of multiplicity in pp, p–A and A–A collisions measured with ALICE — •Youssef El Mard Bouziani for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität Frankfurt

The ALICE experiment focuses on the study of the hot and deconfined QCD medium, the Quark-Gluon Plasma (QGP), by investigating heavy-ion collisions at ultra-relativistic energies. Particle production in different collision systems can be examined by means of the correlation between charged-particle transverse momentum (p_T) spectra and the event multiplicity.

In this talk, a differential analysis of charged-particle p_T spectra as a function of charged-particle multiplicity density is presented. The spectra are obtained by means of a 2-dimensional unfolding procedure. The energy and system-size dependence of charged-particle production is inspected studying the correlation of p_T and charged multiplicity in different collision systems and center-of-mass energies. In particular, resulting spectra measured in pp, p–Pb, Pb–Pb and Xe–Xe collisions are considered. Comparisons of the measurements to predictions from Monte-Carlo event generators are reported.
Supported by BMBF and the Helmholtz Association.