Speaker
Description
Over the past 15 years, elliptic and triangular flow coefficients ($v_2$, $v_3$) have been extensively studied in heavy-ion collisions to gain insight into the collective behavior and transport properties of the quark-gluon plasma (QGP). However, in recent years, increasing attention has been directed toward the radial and directed flow coefficients ($v_0$, $v_1$), which have emerged as valuable probes of the QGP medium. In this talk, I will present our recent work on the study of $v_0$ and $v_1$ across a wide range of collision energies, from the LHC to RHIC. The radial flow coefficient $v_0$, now measured in several experiments, is currently a topic of active discussion as a probe of the collective behaviour of the medium. In addition, directed flow $v_1$—especially for identified particles—along with the observed splitting between baryons and antibaryons, and between positively and negatively charged hadrons, serves as a sensitive probe of conserved charge dynamics, their diffusion, electromagnetic fields, and the medium’s electrical conductivity. I will discuss our hydrodynamic model results for $v_0$ and its significance as well as the detailed investigation of $v_1$ for identified hadrons, emphasizing its relevance in the Beam Energy Scan (BES) program phenomenology. In particular, I will highlight the role of baryon diffusion in shaping directed flow and present our recent findings on how baryon diffusion and electrical conductivity influence the splitting of $v_1$ among hadron species with identical mass but different conserved charges.
