Electroweak bosons, W± and Z0, are massive weakly-interacting particles insensitive to the strong interaction. Therefore, they are unique probes in pp and heavy-ion collisions and provide a medium-blind probe of the initial state of the heavy-ion collision.
In the ALICE experiment, the productions of W± and Z0 are studied by exploiting their leptonic decay channels in a wide rapidity region.
In this contribution, the differential cross sections for W± and Z0 in pp collisions at √s= 13 TeV, p--Pb collisions at √sNN= 8.16 TeV and Pb--Pb collisions at √sNN= 5.02 TeV are reported. The charged particle multiplicity dependence of W bosons and the associated hadrons production in pp collisions at √s= 13 TeV is also shown.
