Measurements of the production of W± and Z⁰ bosons in pp collisions at √s = 13 TeV

Measurements of the production of the W ± ± and Z ⁰ 0 bosons at midrapidity in pp collisions at √s = 13 s = 13 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The W ± ± and Z ⁰ 0 bosons are detected via their (di)electronic decay channels, with the electron reconstruction performed in the midrapidity region $$(|y|< 0.6).$$ ( | y | < 0.6 ) . The p_T p T -integrated and pT p T -differential production cross sections of electrons from W ± ± decays in the interval $$30 30 < p T < 60 GeV/ c , as well as the $$p_{{T}}$$ p T -integrated production cross section of Z $$^0$$ 0 bosons, are measured. The results are described by perturbative QCD calculations using different sets of parton distribution functions. The production of W $$±$$ ± bosons and azimuthally correlated associated hadrons is also measured as a function of the charged-particle multiplicity for the first time at the LHC. The former increases approximately linearly with the charged-particle multiplicity, while for the latter, there are hints of a faster-than-linear increase. These observations are compared with theoretical calculations .