Measurements of the production of the W± and Z0 bosons at midrapidity in pp collisions at s=13 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The W± and Z0 bosons are detected via their (di)electronic decay channels, with the electron reconstruction performed in the midrapidity region (|y|<0.6). The pT-integrated and pT-differential production cross sections of electrons from W± decays in the interval 30<60 GeV/c, as well as the pT-integrated production cross section of Z0 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.
Measurements of the production of W$$^{\pm }$$ and Z$$^0$$ bosons in pp collisions at $$\sqrt{s} = 13$$ TeV
Barile, F.Membro del Collaboration Group
;Colella, D.Membro del Collaboration Group
;Colelli, A.Membro del Collaboration Group
;Di Bari, D.Membro del Collaboration Group
;Mazzilli, M.Membro del Collaboration Group
;Nicassio, N.Membro del Collaboration Group
;Volpe, G.Membro del Collaboration Group
;
2026-01-01
Abstract
Measurements of the production of the W± and Z0 bosons at midrapidity in pp collisions at s=13 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The W± and Z0 bosons are detected via their (di)electronic decay channels, with the electron reconstruction performed in the midrapidity region (|y|<0.6). The pT-integrated and pT-differential production cross sections of electrons from W± decays in the interval 30<60 GeV/c, as well as the pT-integrated production cross section of Z0 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


