Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC

The measurement of azimuthal correlations of charged particles is presented for Pb{Pb collisions at p s NN = 2.76 TeV and p{Pb collisions at p s NN = 5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. These correlations are measured for the second, third and fourth order ow vector in the pseudorapidity region j j < 0 : 8 as a function of centrality and transverse momentum p T using two observables, to search for evidence of p T -dependent ow vector uctuations. For Pb{Pb collisions at 2.76 TeV, the measurements indicate that p T -dependent uctuations are only present for the second order ow vector. Similar results have been found for p{Pb collisions at 5.02 TeV. These measurements are compared to hydrodynamic model calculations with event-by-event ge- ometry uctuations in the initial state to constrain the initial conditions and transport properties of the matter created in Pb{Pb and p{Pb collisions.