Event-Shape Engineering and Muon-Hadron Correlations with ALICE

TL;DR

This paper presents ALICE collaboration results on event-shape engineering and long-range correlations in heavy-ion and proton collisions, revealing insights into initial state effects and flow dynamics in high-energy nuclear physics.

Contribution

It introduces event-shape engineering as a novel method to classify collision events by flow characteristics and explores long-range correlations across different collision systems.

Findings

Event-shape engineering correlates flow with initial-state eccentricity.

Long-range correlations persist at large rapidities in p-Pb collisions.

Results suggest interplay between radial and elliptic flow.

Abstract

Angular correlations of two and more particles are a sensitive probe of the initial state and the transport properties of the system produced in heavy-ion collisions. Two recent results of the ALICE collaboration are presented. Event-shape engineering, a novel method, is applied to Pb-Pb collisions which splits events within the same centrality interval into classes with different average flow. The results indicate an interplay between radial and elliptic flow likely related to the initial-state eccentricity. In pp and p-Pb collisions, recent results revealed intriguing long-range correlation structures reminiscent of features observed in heavy-ion collisions. The use of forward detectors allowed to show that long-range correlation structures persist also at large rapidities in p-Pb collisions.