Speaker
Description
In heavy-ion collisions, collective phenomena in the hot and dense medium known as the Quark–Gluon Plasma (QGP) are probed through measurements of mean transverse momentum and azimuthal particle correlations. Similar correlation patterns observed in small collision systems raise questions about their origin, involving either final-state collective effects or initial-state parton correlations at small-x. The LHCb experiment has unique capabilities to study these observables at forward rapidity in high-energy hadronic collisions, accessing the smallest Bjorken-x values among the LHC detectors, where parton correlations are more pronounced. By comparing small to intermediate-x regions, the LHCb experiment also has unique sensitivity to initial-state effects. This contribution presents recent LHCb results on mean transverse momentum and collective flow in small systems, providing new constraints on the mechanisms driving particle correlations.
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