Speaker
Description
One of the most effective techniques for investigating the mechanism of baryon production is the study of angular correlations between two particles. Angular correlations represent a convolution of various physical processes, such as mini-jets, Bose-Einstein quantum statistics, conservation of momentum, resonances, and other phenomena that contribute to the unique behavior observed for different particle species.
Experimental results from proton-proton collisions at 7 TeV have revealed a pronounced anticorrelation — a phenomenon that has not been replicated by Monte Carlo models. This discovery triggered a series of studies that led to the formulation of what is now referred to as the “baryon correlation puzzle”.
This work presents ALICE measurements of angular correlation functions for identified particles. Correlations involving $\pi^{\pm}$, $K^{\pm}$, and $p(\bar{p})$ are reported for different multiplicity ranges for all three collision systems—pp, p–Pb, and Pb–Pb — while correlations for $p–\Lambda$, $\Lambda-\bar{\Lambda}$, $p–\phi$, $p–\Xi$, and $\Lambda–\Xi$ pairs are presented for pp collisions, based on both LHC Run 2 and Run 3 data. The inclusion of $p–\phi$ correlations provides a crucial test case for evaluating the role of particle mass in the manifestation of anticorrelations. In addition, we report on $p–\Lambda_c$ correlation measurements, offering novel insight into baryon-baryon dynamics in the charm sector.
