Speaker
Description
Measurements of long-range correlations are one of the important tools for evaluation of the interplay between the initial- and final-state effects. Recently, non-vanishing second Fourier harmonic $\it{v}_{2}$ has been observed in small collision systems such as pp and p--Pb collisions. In this contribution, we present measurements of $\it{v}_{2}$ extracted from long-range two-particle correlations for different charged particles multiplicities in pp at $\sqrt{s} = 13~\rm{TeV}$ and in p--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02~\rm{TeV}$.These measurements utilize the Forward Multiplicity Detector, which allows for unprecedented pseudorapidity ($\Delta\eta$) ranges to be explored (up to $\Delta\eta ~\sim 8$). We show the result of the $\eta$ dependence of $\it{v}_{2}$ over a wide pseudorapidity range ($-3.1<\eta<4.8$). Results are compared with the AMPT and hydrodynamical calculations.
