PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Strong interactions and Hadron Physics
Ground and excited quarkonium states as probes of MPI in small systems with ALICE
T.Β Tork
Full text: pdf
Pre-published on: December 16, 2022
Published on: β€”
Abstract
Quarkonia represent excellent tools for understanding the role of multiparton interactions (MPI)
in small systems, i.e., pp and p-A collisions. Probing MPI with quarkonia can be done directly by
looking at quarkonium associated production, or indirectly by studying the multiplicity dependence
of quarkonium production. In these proceedings, the results from the ALICE experiment on direct
and indirect MPI probes are discussed. The self-normalized yields of charmonium production
as a function of the charged-particle multiplicity in pp and p–Pb collisions at βˆšπ‘  = 13 TeV and
βˆšπ‘ NN = 8.16 TeV, respectively, are discussed. Additionally, the corresponding measurements
of the charmonium self-normalized excited-to-ground state ratio as a function of the charged-
particle multiplicity are reported. The new measurement of the double J/πœ“ production at forward
rapidity in pp collisions at βˆšπ‘  = 13 TeV is presented. Finally, the multiplicity dependence of the
bottomonium production in pp collisions at βˆšπ‘  = 13 TeV is discussed. The comparison to the
available theoretical calculations is reported.
DOI: https://doi.org/10.22323/1.414.0763
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