Studying particle production in small systems through correlation measurements in ALICE

Abstract

In these proceedings, measurements of angular correlations between hadron pairs in pp collisions obtained by the ALICE experiment at the LHC are presented and compared with phenomenological predictions. Correlations between particles carrying the same and opposite quantum numbers are studied to understand the hadron production mechanism, and the difference between same-sign and opposite-sign correlations is used to probe charge-dependent effects in particle production. Correlation measurements dominated by minijet fragmentation agree well with the models, but other results, in particular correlations between baryons and strange hadrons, are not yet understood.

7 pages, 5 figures; conference proceedings of Excited QCD 2020, 2-8 February 2020; submitted to Acta Physica Polonica B - Proceedings Supplement